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Finding the Fourth Proportional to 656,924.15, 906,491.19 and 381,239.13

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Solution

The fourth proportional to 656,924.15, 906,491.19 and 381,239.13 is: 526,072.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,924.15 : 906,491.19 = 381,239.13 : x
  2. Step 2: Convert to fraction form
    656,924.15/906,491.19 = 381,239.13/x
  3. Step 3: Cross multiply
    656,924.15x = 906,491.19 × 381,239.13
  4. Step 4: Simplify right side
    656,924.15x = 345,589,912,628.27
  5. Step 5: Solve for x
    x = 345,589,912,628.27/656,924.15
  6. Step 6: Final answer
    x = 526,072.78

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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.