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Finding the Fourth Proportional to 485,666.60, 728,499.90 and 482,556.20

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Solution

The fourth proportional to 485,666.60, 728,499.90 and 482,556.20 is: 723,834.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,666.60 : 728,499.90 = 482,556.20 : x
  2. Step 2: Convert to fraction form
    485,666.60/728,499.90 = 482,556.20/x
  3. Step 3: Cross multiply
    485,666.60x = 728,499.90 × 482,556.20
  4. Step 4: Simplify right side
    485,666.60x = 351,542,143,444.38
  5. Step 5: Solve for x
    x = 351,542,143,444.38/485,666.60
  6. Step 6: Final answer
    x = 723,834.30

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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.