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Finding the Fourth Proportional to 880,534, 1,215,136.92 and 478,126

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Solution

The fourth proportional to 880,534, 1,215,136.92 and 478,126 is: 659,813.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,534 : 1,215,136.92 = 478,126 : x
  2. Step 2: Convert to fraction form
    880,534/1,215,136.92 = 478,126/x
  3. Step 3: Cross multiply
    880,534x = 1,215,136.92 × 478,126
  4. Step 4: Simplify right side
    880,534x = 580,988,555,011.92
  5. Step 5: Solve for x
    x = 580,988,555,011.92/880,534
  6. Step 6: Final answer
    x = 659,813.88

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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.