Finding the Fourth Proportional to 1,207,232,442.90, 1,810,848,664.35 and 656,234,414.10
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Solution
The fourth proportional to 1,207,232,442.90, 1,810,848,664.35 and 656,234,414.10 is: 984,351,621.15
Step by Step Solution
- Step 1: Write the proportion equation
1,207,232,442.90 : 1,810,848,664.35 = 656,234,414.10 : x - Step 2: Convert to fraction form
1,207,232,442.90/1,810,848,664.35 = 656,234,414.10/x - Step 3: Cross multiply
1,207,232,442.90x = 1,810,848,664.35 × 656,234,414.10 - Step 4: Simplify right side
1,207,232,442.90x = 1,188,341,212,273,489,664 - Step 5: Solve for x
x = 1,188,341,212,273,489,664/1,207,232,442.90 - Step 6: Final answer
x = 984,351,621.15
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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.