Four fifths is less.
greater than four.
fifteen sixteenths, and an infinity of other numbers less than one as well as the infinity of numbers greater than or equal to one.
less than. three and ten one hundredths is less than three and fifteen one hundredths.
There is no single number that satisfies those conditions.
Four times greater.
two fifths is less than four sixths
0.4 is greater. Four parts out of ten is greater than four parts out of 100.
Four ninths is less than eight sixteenths.