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Finding the Fourth Proportional to 472,585.20, 708,877.80 and 431,250.90

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Solution

The fourth proportional to 472,585.20, 708,877.80 and 431,250.90 is: 646,876.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,585.20 : 708,877.80 = 431,250.90 : x
  2. Step 2: Convert to fraction form
    472,585.20/708,877.80 = 431,250.90/x
  3. Step 3: Cross multiply
    472,585.20x = 708,877.80 × 431,250.90
  4. Step 4: Simplify right side
    472,585.20x = 305,704,189,240.02
  5. Step 5: Solve for x
    x = 305,704,189,240.02/472,585.20
  6. Step 6: Final answer
    x = 646,876.35

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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.