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Finding the Fourth Proportional to 570,915.60, 856,105.20 and 331,097.66

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Solution

The fourth proportional to 570,915.60, 856,105.20 and 331,097.66 is: 496,490.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,915.60 : 856,105.20 = 331,097.66 : x
  2. Step 2: Convert to fraction form
    570,915.60/856,105.20 = 331,097.66/x
  3. Step 3: Cross multiply
    570,915.60x = 856,105.20 × 331,097.66
  4. Step 4: Simplify right side
    570,915.60x = 283,454,428,433.83
  5. Step 5: Solve for x
    x = 283,454,428,433.83/570,915.60
  6. Step 6: Final answer
    x = 496,490.95

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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.