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Finding the Fourth Proportional to 625,273.97, 863,175.59 and 418,897.71

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Solution

The fourth proportional to 625,273.97, 863,175.59 and 418,897.71 is: 578,278.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,273.97 : 863,175.59 = 418,897.71 : x
  2. Step 2: Convert to fraction form
    625,273.97/863,175.59 = 418,897.71/x
  3. Step 3: Cross multiply
    625,273.97x = 863,175.59 × 418,897.71
  4. Step 4: Simplify right side
    625,273.97x = 361,582,275,884.41
  5. Step 5: Solve for x
    x = 361,582,275,884.41/625,273.97
  6. Step 6: Final answer
    x = 578,278.16

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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.