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Finding the Fourth Proportional to 738,375, 1,018,957.92 and 398,843.25

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Solution

The fourth proportional to 738,375, 1,018,957.92 and 398,843.25 is: 550,403.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,375 : 1,018,957.92 = 398,843.25 : x
  2. Step 2: Convert to fraction form
    738,375/1,018,957.92 = 398,843.25/x
  3. Step 3: Cross multiply
    738,375x = 1,018,957.92 × 398,843.25
  4. Step 4: Simplify right side
    738,375x = 406,404,488,426.04
  5. Step 5: Solve for x
    x = 406,404,488,426.04/738,375
  6. Step 6: Final answer
    x = 550,403.91

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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.