There are actually a couple of organizations whose units do not match up.
Uncle Sam's Misguided Children are one of them, as every Marine -- every Marine -- is first and foremost a rifleman. He might fly trash haulers, he might cook at the base, but when the balloon goes up, Cookie is gonna grab his M-16 and hit the beach with the rest of them. The other thing is that except for very few places, such as Camp LeJeune, the Marine support organization is ... well, the Navy.
The Navy, on the other hand, is an odd bird, because 'who do you include as being on the sharp end?' If it's the trigger-pullers, on a ship the size of an aircraft carrier, you're looking at a few score out of the thousands needed to run the floating city. All the rest of them are 'supply corps' -- but they're out there, keeping the boilers going. On the other hand, you don't typically count certain others usually based on land, but sure as hell they're warriors. (I'm lookin' at YOU, SEALs.) On the other hand, a naval base has a huge supply train -- but they don't service ships all at once. Sequentially tends to be the ticket...
Anyhow. Take ratios and numbers with a grain of salt; look to the actual 'projected force' data.