An additional four-note chord that sounds like and functions similar to a $\left.\text{V}^{7}\right.$ chord is the $\left.\text{IV}\right.$/$\hat{5}$ (or $\left.\text{F}\middle/\text{G}\right.$ in $\text{C}$ major) chord. In popular music this chord often is substituted for the $\left.\text{V}^{7}\right.$ chord
Here is a musical example with the $\left.\text{IV}\right.$/$\hat{5}$ chord in $\text{A}^♭$ major.