Finding the Fourth Proportional to 5,431,729.10, 8,147,593.65 and 2,912,305.10
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Solution
The fourth proportional to 5,431,729.10, 8,147,593.65 and 2,912,305.10 is: 4,368,457.65
Step by Step Solution
- Step 1: Write the proportion equation
5,431,729.10 : 8,147,593.65 = 2,912,305.10 : x - Step 2: Convert to fraction form
5,431,729.10/8,147,593.65 = 2,912,305.10/x - Step 3: Cross multiply
5,431,729.10x = 8,147,593.65 × 2,912,305.10 - Step 4: Simplify right side
5,431,729.10x = 23,728,278,539,622.62 - Step 5: Solve for x
x = 23,728,278,539,622.62/5,431,729.10 - Step 6: Final answer
x = 4,368,457.65
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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.