Finding the Fourth Proportional to 647,511,203.80, 971,266,805.70 and 534,137,123.80
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Solution
The fourth proportional to 647,511,203.80, 971,266,805.70 and 534,137,123.80 is: 801,205,685.70
Step by Step Solution
- Step 1: Write the proportion equation
647,511,203.80 : 971,266,805.70 = 534,137,123.80 : x - Step 2: Convert to fraction form
647,511,203.80/971,266,805.70 = 534,137,123.80/x - Step 3: Cross multiply
647,511,203.80x = 971,266,805.70 × 534,137,123.80 - Step 4: Simplify right side
647,511,203.80x = 518,789,658,039,011,456 - Step 5: Solve for x
x = 518,789,658,039,011,456/647,511,203.80 - Step 6: Final answer
x = 801,205,685.70
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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.