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Finding the Fourth Proportional to 522,079.20, 781,369.20 and 459,093.60

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Solution

The fourth proportional to 522,079.20, 781,369.20 and 459,093.60 is: 687,101.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,079.20 : 781,369.20 = 459,093.60 : x
  2. Step 2: Convert to fraction form
    522,079.20/781,369.20 = 459,093.60/x
  3. Step 3: Cross multiply
    522,079.20x = 781,369.20 × 459,093.60
  4. Step 4: Simplify right side
    522,079.20x = 358,721,598,957.12
  5. Step 5: Solve for x
    x = 358,721,598,957.12/522,079.20
  6. Step 6: Final answer
    x = 687,101.88

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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.