$160\text{ dpi}$
$(1\times\text{ density})$

$480\text{ dpi}$
$(3\times\text{ density})$

$160\text{ dp} = 160\text{ px}$

$160\text{ dp} = 480\text{ px}$

$160\text{ dp}$

$160\text{ dp}$

$\frac{160\text{ px}}{160\text{ dpi}} = 1.0\text{ in}$

$\frac{480\text{ px}}{480\text{ dpi}} = 1.0\text{ in}$