To find how many times farther Saturn is from the sun than Jupiter, we need to divide the distance of Saturn by the distance of Jupiter.
The distances are:
- Saturn: \( 1.43 \times 10^9 \) kilometers
- Jupiter: \( 7.78 \times 10^8 \) kilometers
Now, we set up the division:
\[ \frac{1.43 \times 10^9}{7.78 \times 10^8} \]
To simplify this, we divide the coefficients and subtract the exponents (using the property of exponents \( \frac{10^a}{10^b} = 10^{a-b} \)):
\[ \frac{1.43}{7.78} \times 10^{9 - 8} = \frac{1.43}{7.78} \times 10^1 \]
Now, we calculate \( \frac{1.43}{7.78} \):
\[ \frac{1.43}{7.78} \approx 0.183 \]
Next, we multiply this by \( 10^1 = 10 \):
\[ 0.183 \times 10 = 1.83 \]
Finally, rounding \( 1.83 \) to the nearest tenth results in:
\[ \boxed{1.8} \]
So, Saturn is approximately 1.8 times farther from the sun than Jupiter.