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Finding the Fourth Proportional to 658,689.17, 908,979.22 and 372,203.10

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Solution

The fourth proportional to 658,689.17, 908,979.22 and 372,203.10 is: 513,633.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,689.17 : 908,979.22 = 372,203.10 : x
  2. Step 2: Convert to fraction form
    658,689.17/908,979.22 = 372,203.10/x
  3. Step 3: Cross multiply
    658,689.17x = 908,979.22 × 372,203.10
  4. Step 4: Simplify right side
    658,689.17x = 338,324,881,891.19
  5. Step 5: Solve for x
    x = 338,324,881,891.19/658,689.17
  6. Step 6: Final answer
    x = 513,633.59

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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.