Stewie and screen size

Stewie plays computer games on monitor having screen size $h * w$ centimeters. His friend NiKo told him to switch to screen sides ratio $x : y$ which is more popular with players. Stewie wants to reduce his monitor screen sides so its ratio becomes $x : y$ but at the same time he also wants its total area to be maximum. Find the reduced screen size or if it can't be performed. ###Input: The firs