Finding the Fourth Proportional to 647,107.20, 970,660.80 and 247,542.30
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Solution
The fourth proportional to 647,107.20, 970,660.80 and 247,542.30 is: 371,313.45
Step by Step Solution
- Step 1: Write the proportion equation
647,107.20 : 970,660.80 = 247,542.30 : x - Step 2: Convert to fraction form
647,107.20/970,660.80 = 247,542.30/x - Step 3: Cross multiply
647,107.20x = 970,660.80 × 247,542.30 - Step 4: Simplify right side
647,107.20x = 240,279,606,951.84 - Step 5: Solve for x
x = 240,279,606,951.84/647,107.20 - Step 6: Final answer
x = 371,313.45
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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.