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Finding the Fourth Proportional to 485,133.60, 727,700.40 and 482,023.20

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Solution

The fourth proportional to 485,133.60, 727,700.40 and 482,023.20 is: 723,034.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,133.60 : 727,700.40 = 482,023.20 : x
  2. Step 2: Convert to fraction form
    485,133.60/727,700.40 = 482,023.20/x
  3. Step 3: Cross multiply
    485,133.60x = 727,700.40 × 482,023.20
  4. Step 4: Simplify right side
    485,133.60x = 350,768,475,449.28
  5. Step 5: Solve for x
    x = 350,768,475,449.28/485,133.60
  6. Step 6: Final answer
    x = 723,034.80

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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.