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Finding the Fourth Proportional to 539,425.20, 807,712.20 and 432,310.80

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Solution

The fourth proportional to 539,425.20, 807,712.20 and 432,310.80 is: 647,323.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,425.20 : 807,712.20 = 432,310.80 : x
  2. Step 2: Convert to fraction form
    539,425.20/807,712.20 = 432,310.80/x
  3. Step 3: Cross multiply
    539,425.20x = 807,712.20 × 432,310.80
  4. Step 4: Simplify right side
    539,425.20x = 349,182,707,351.76
  5. Step 5: Solve for x
    x = 349,182,707,351.76/539,425.20
  6. Step 6: Final answer
    x = 647,323.68

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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.