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Finding the Fourth Proportional to 637,354.74, 878,732.64 and 522,209.19

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Solution

The fourth proportional to 637,354.74, 878,732.64 and 522,209.19 is: 719,979.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,354.74 : 878,732.64 = 522,209.19 : x
  2. Step 2: Convert to fraction form
    637,354.74/878,732.64 = 522,209.19/x
  3. Step 3: Cross multiply
    637,354.74x = 878,732.64 × 522,209.19
  4. Step 4: Simplify right side
    637,354.74x = 458,882,260,160.96
  5. Step 5: Solve for x
    x = 458,882,260,160.96/637,354.74
  6. Step 6: Final answer
    x = 719,979.36

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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.