Determining x:1 from the diameter of the Sun and one of its granules.

Question

I'm a having trouble solving the following: What is the ratio of the diameter of the Sun to the typical width of a granule on the Sun's surface? Express your final answer in the fully factorised form x : 1, where x is a number that you must determine. I reduced the numbers but I'm not sure how I'm meant to reduce it to x unless I'm not reducing the ratios correctly? A granule on the Sun is about 1000Km across the diameter of the Sun is 1.391016 million km.

Answer 1

Use proportion: $$\frac{x}{1}=x=\frac{1.391016 \cdot 10^6}{1000}=1.391016 \cdot 10^3=1391.016$$ You can either round up the result or say that the ratio is $1391016:1000$