To find out how many times greater 1 kilogram is than 1 microgram, we can convert both measurements to the same unit.
1 kilogram (kg) is equal to \( 1,000,000 \) micrograms (µg), since \( 1 , \text{kg} = 10^3 , \text{g} \) and \( 1 , \text{g} = 10^6 , \text{µg} \). Therefore:
\[ 1 , \text{kg} = 10^3 , \text{g} \times 10^6 , \text{µg/g} = 10^9 , \text{µg} \]
Now to find how many times greater 1 kilogram is than 1 microgram, we can use the following ratio:
\[ \frac{1 , \text{kg}}{1 , \text{µg}} = \frac{10^9 , \text{µg}}{1 , \text{µg}} = 10^9 \]
So, 1 kilogram is \( 10^9 \) times greater than 1 microgram. The answer is \( 10^9 \).