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Finding the Fourth Proportional to 658,686.77, 908,975.92 and 372,200.71

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Solution

The fourth proportional to 658,686.77, 908,975.92 and 372,200.71 is: 513,630.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,686.77 : 908,975.92 = 372,200.71 : x
  2. Step 2: Convert to fraction form
    658,686.77/908,975.92 = 372,200.71/x
  3. Step 3: Cross multiply
    658,686.77x = 908,975.92 × 372,200.71
  4. Step 4: Simplify right side
    658,686.77x = 338,321,482,796.90
  5. Step 5: Solve for x
    x = 338,321,482,796.90/658,686.77
  6. Step 6: Final answer
    x = 513,630.30

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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.