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Finding the Fourth Proportional to 642,517.60, 887,088.72 and 413,177.44

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Solution

The fourth proportional to 642,517.60, 887,088.72 and 413,177.44 is: 570,451.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,517.60 : 887,088.72 = 413,177.44 : x
  2. Step 2: Convert to fraction form
    642,517.60/887,088.72 = 413,177.44/x
  3. Step 3: Cross multiply
    642,517.60x = 887,088.72 × 413,177.44
  4. Step 4: Simplify right side
    642,517.60x = 366,525,046,382.48
  5. Step 5: Solve for x
    x = 366,525,046,382.48/642,517.60
  6. Step 6: Final answer
    x = 570,451.37

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.