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Finding the Fourth Proportional to 658,781.64, 909,018.11 and 372,197.16

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Solution

The fourth proportional to 658,781.64, 909,018.11 and 372,197.16 is: 513,575.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,781.64 : 909,018.11 = 372,197.16 : x
  2. Step 2: Convert to fraction form
    658,781.64/909,018.11 = 372,197.16/x
  3. Step 3: Cross multiply
    658,781.64x = 909,018.11 × 372,197.16
  4. Step 4: Simplify right side
    658,781.64x = 338,333,957,069.58
  5. Step 5: Solve for x
    x = 338,333,957,069.58/658,781.64
  6. Step 6: Final answer
    x = 513,575.27

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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.