If you want to convert 1.4 into a fraction, you can do it like this:
1 equals to 1/1 and 0.4 equals to 4/10 which simplifies to 2/5.
The result is 1 2/5.
If you want to write the ratio of 1.4/7 in the simplest form, you can do this using the following steps:
1.4/7 = 1 2/5 / 7 = 7/5 / 7 = 7/5 * 1/7 = 1/5 = 0.2
The correct result would be 1/5.