Finding the Fourth Proportional to 861,192,022.80, 1,291,788,034.20 and 492,348,349.20
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Solution
The fourth proportional to 861,192,022.80, 1,291,788,034.20 and 492,348,349.20 is: 738,522,523.80
Step by Step Solution
- Step 1: Write the proportion equation
861,192,022.80 : 1,291,788,034.20 = 492,348,349.20 : x - Step 2: Convert to fraction form
861,192,022.80/1,291,788,034.20 = 492,348,349.20/x - Step 3: Cross multiply
861,192,022.80x = 1,291,788,034.20 × 492,348,349.20 - Step 4: Simplify right side
861,192,022.80x = 636,009,706,154,683,136 - Step 5: Solve for x
x = 636,009,706,154,683,136/861,192,022.80 - Step 6: Final answer
x = 738,522,523.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.