Home / 457,790.20-686,685.30-424,612.60

Finding the Fourth Proportional to 457,790.20, 686,685.30 and 424,612.60

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Solution

The fourth proportional to 457,790.20, 686,685.30 and 424,612.60 is: 636,918.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,790.20 : 686,685.30 = 424,612.60 : x
  2. Step 2: Convert to fraction form
    457,790.20/686,685.30 = 424,612.60/x
  3. Step 3: Cross multiply
    457,790.20x = 686,685.30 × 424,612.60
  4. Step 4: Simplify right side
    457,790.20x = 291,575,230,614.78
  5. Step 5: Solve for x
    x = 291,575,230,614.78/457,790.20
  6. Step 6: Final answer
    x = 636,918.90

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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.