Finding the Fourth Proportional to 664,705,129.80, 997,057,694.70 and 551,458,921.80
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Solution
The fourth proportional to 664,705,129.80, 997,057,694.70 and 551,458,921.80 is: 827,188,382.70
Step by Step Solution
- Step 1: Write the proportion equation
664,705,129.80 : 997,057,694.70 = 551,458,921.80 : x - Step 2: Convert to fraction form
664,705,129.80/997,057,694.70 = 551,458,921.80/x - Step 3: Cross multiply
664,705,129.80x = 997,057,694.70 × 551,458,921.80 - Step 4: Simplify right side
664,705,129.80x = 549,836,361,291,655,552 - Step 5: Solve for x
x = 549,836,361,291,655,552/664,705,129.80 - Step 6: Final answer
x = 827,188,382.70
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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.