We are given the following proportion

We are asked to determine if the above proportion is true.
Recall that a true proportion is the one in which ratios on both sides of the equation are equivalent.
In the given case, 0/0.5 is basically 0 but the other side of the equation is not 0.
Therefore, this proportion is not true.
An example of a true proportion is given below

Another example of true proportion:

When you simplify the above ratios then you will get the equal ratios so that would make it a true proportion.