Finding the Fourth Proportional to 8,394,414.30, 12,591,621.45 and 8,207,790.30
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Solution
The fourth proportional to 8,394,414.30, 12,591,621.45 and 8,207,790.30 is: 12,311,685.45
Step by Step Solution
- Step 1: Write the proportion equation
8,394,414.30 : 12,591,621.45 = 8,207,790.30 : x - Step 2: Convert to fraction form
8,394,414.30/12,591,621.45 = 8,207,790.30/x - Step 3: Cross multiply
8,394,414.30x = 12,591,621.45 × 8,207,790.30 - Step 4: Simplify right side
8,394,414.30x = 103,349,388,398,581.92 - Step 5: Solve for x
x = 103,349,388,398,581.92/8,394,414.30 - Step 6: Final answer
x = 12,311,685.45
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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.