very similar to our own (comprising around three-fourths water and one-fourth rock
Which planet is that because it certainly is not the Earth, while the surface is quite wet and the crust too contains a fair bit of water the vast bulk of the planet is rock,
The density of the Earth is 5.513 g/cm3 if it was 3/4 water the rest would have to be about 19 g/cm3 which is roughly the density of gold. Is there something about the Earth we're not being told?
Biting the hand that feeds IT
