Home / 687,498.13-948,795.36-454,520.30

Finding the Fourth Proportional to 687,498.13, 948,795.36 and 454,520.30

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Solution

The fourth proportional to 687,498.13, 948,795.36 and 454,520.30 is: 627,269.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,498.13 : 948,795.36 = 454,520.30 : x
  2. Step 2: Convert to fraction form
    687,498.13/948,795.36 = 454,520.30/x
  3. Step 3: Cross multiply
    687,498.13x = 948,795.36 × 454,520.30
  4. Step 4: Simplify right side
    687,498.13x = 431,246,745,217.38
  5. Step 5: Solve for x
    x = 431,246,745,217.38/687,498.13
  6. Step 6: Final answer
    x = 627,269.70

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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.