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Finding the Fourth Proportional to 542,489.40, 813,734.10 and 437,513.40

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Solution

The fourth proportional to 542,489.40, 813,734.10 and 437,513.40 is: 656,270.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,489.40 : 813,734.10 = 437,513.40 : x
  2. Step 2: Convert to fraction form
    542,489.40/813,734.10 = 437,513.40/x
  3. Step 3: Cross multiply
    542,489.40x = 813,734.10 × 437,513.40
  4. Step 4: Simplify right side
    542,489.40x = 356,019,572,786.94
  5. Step 5: Solve for x
    x = 356,019,572,786.94/542,489.40
  6. Step 6: Final answer
    x = 656,270.10

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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.