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Finding the Fourth Proportional to 687,495.24, 948,753.54 and 381,591.27

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Solution

The fourth proportional to 687,495.24, 948,753.54 and 381,591.27 is: 526,601.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,495.24 : 948,753.54 = 381,591.27 : x
  2. Step 2: Convert to fraction form
    687,495.24/948,753.54 = 381,591.27/x
  3. Step 3: Cross multiply
    687,495.24x = 948,753.54 × 381,591.27
  4. Step 4: Simplify right side
    687,495.24x = 362,036,068,245.60
  5. Step 5: Solve for x
    x = 362,036,068,245.60/687,495.24
  6. Step 6: Final answer
    x = 526,601.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.