Home / 457,792.20-686,688.30-424,614.60

Finding the Fourth Proportional to 457,792.20, 686,688.30 and 424,614.60

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Solution

The fourth proportional to 457,792.20, 686,688.30 and 424,614.60 is: 636,921.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,792.20 : 686,688.30 = 424,614.60 : x
  2. Step 2: Convert to fraction form
    457,792.20/686,688.30 = 424,614.60/x
  3. Step 3: Cross multiply
    457,792.20x = 686,688.30 × 424,614.60
  4. Step 4: Simplify right side
    457,792.20x = 291,577,877,829.18
  5. Step 5: Solve for x
    x = 291,577,877,829.18/457,792.20
  6. Step 6: Final answer
    x = 636,921.90

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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.