The two different tabs are the same chords, the first is an "easy" one for beginners, it's an inversion with the 5th as the lower note, and the root an octave high. You can get away without it in the bass position, as your bass guitar provides a strong root (and rhythm) throughout.
The second example is the normal form of the powerchord, and it has the root note in as the bass as well, which doubles up the octave.
Both contain the 5th, not the 4th, so I'm unsure what the question is here.