An object is thrown directly away from the surface of the earth with an initial speed \(V\). The object reaches upto a height of
\[
\frac{4}{5}R_E
\]
from earth’s surface, where \(R_E\) is radius of the earth. If the escape velocity of the object is \(V_E\), then the value of
\[
\frac{V}{V_E}
\]
is