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Finding the Fourth Proportional to 813,627, 1,122,805.20 and 451,049.94

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Solution

The fourth proportional to 813,627, 1,122,805.20 and 451,049.94 is: 622,448.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,627 : 1,122,805.20 = 451,049.94 : x
  2. Step 2: Convert to fraction form
    813,627/1,122,805.20 = 451,049.94/x
  3. Step 3: Cross multiply
    813,627x = 1,122,805.20 × 451,049.94
  4. Step 4: Simplify right side
    813,627x = 506,441,218,091.69
  5. Step 5: Solve for x
    x = 506,441,218,091.69/813,627
  6. Step 6: Final answer
    x = 622,448.88

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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.