Home / 485,028.20-727,542.30-272,451.80

Finding the Fourth Proportional to 485,028.20, 727,542.30 and 272,451.80

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Solution

The fourth proportional to 485,028.20, 727,542.30 and 272,451.80 is: 408,677.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,028.20 : 727,542.30 = 272,451.80 : x
  2. Step 2: Convert to fraction form
    485,028.20/727,542.30 = 272,451.80/x
  3. Step 3: Cross multiply
    485,028.20x = 727,542.30 × 272,451.80
  4. Step 4: Simplify right side
    485,028.20x = 198,220,209,211.14
  5. Step 5: Solve for x
    x = 198,220,209,211.14/485,028.20
  6. Step 6: Final answer
    x = 408,677.70

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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.