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Finding the Fourth Proportional to 485,655.60, 728,483.40 and 482,545.20

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Solution

The fourth proportional to 485,655.60, 728,483.40 and 482,545.20 is: 723,817.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,655.60 : 728,483.40 = 482,545.20 : x
  2. Step 2: Convert to fraction form
    485,655.60/728,483.40 = 482,545.20/x
  3. Step 3: Cross multiply
    485,655.60x = 728,483.40 × 482,545.20
  4. Step 4: Simplify right side
    485,655.60x = 351,526,167,949.68
  5. Step 5: Solve for x
    x = 351,526,167,949.68/485,655.60
  6. Step 6: Final answer
    x = 723,817.80

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Similar ratio
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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.