Finding the Fourth Proportional to 391,999,842.36, 588,088,348.26 and 129,683,778.12
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Solution
The fourth proportional to 391,999,842.36, 588,088,348.26 and 129,683,778.12 is: 194,554,973.32
Step by Step Solution
- Step 1: Write the proportion equation
391,999,842.36 : 588,088,348.26 = 129,683,778.12 : x - Step 2: Convert to fraction form
391,999,842.36/588,088,348.26 = 129,683,778.12/x - Step 3: Cross multiply
391,999,842.36x = 588,088,348.26 × 129,683,778.12 - Step 4: Simplify right side
391,999,842.36x = 76,265,518,870,707,136 - Step 5: Solve for x
x = 76,265,518,870,707,136/391,999,842.36 - Step 6: Final answer
x = 194,554,973.32
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.