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Finding the Fourth Proportional to 615,768.92, 923,919.47 and 331,126.77

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Solution

The fourth proportional to 615,768.92, 923,919.47 and 331,126.77 is: 496,833.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,768.92 : 923,919.47 = 331,126.77 : x
  2. Step 2: Convert to fraction form
    615,768.92/923,919.47 = 331,126.77/x
  3. Step 3: Cross multiply
    615,768.92x = 923,919.47 × 331,126.77
  4. Step 4: Simplify right side
    615,768.92x = 305,934,469,841.21
  5. Step 5: Solve for x
    x = 305,934,469,841.21/615,768.92
  6. Step 6: Final answer
    x = 496,833.24

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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.