Finding the Fourth Proportional to 577,424,221.20, 866,136,331.80 and 543,411,997.20
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Solution
The fourth proportional to 577,424,221.20, 866,136,331.80 and 543,411,997.20 is: 815,117,995.80
Step by Step Solution
- Step 1: Write the proportion equation
577,424,221.20 : 866,136,331.80 = 543,411,997.20 : x - Step 2: Convert to fraction form
577,424,221.20/866,136,331.80 = 543,411,997.20/x - Step 3: Cross multiply
577,424,221.20x = 866,136,331.80 × 543,411,997.20 - Step 4: Simplify right side
577,424,221.20x = 470,668,873,910,919,872 - Step 5: Solve for x
x = 470,668,873,910,919,872/577,424,221.20 - Step 6: Final answer
x = 815,117,995.80
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Double scale
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Similar ratio
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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.