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Finding the Fourth Proportional to 658,425.11, 908,700.40 and 371,963.65

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Solution

The fourth proportional to 658,425.11, 908,700.40 and 371,963.65 is: 513,351.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,425.11 : 908,700.40 = 371,963.65 : x
  2. Step 2: Convert to fraction form
    658,425.11/908,700.40 = 371,963.65/x
  3. Step 3: Cross multiply
    658,425.11x = 908,700.40 × 371,963.65
  4. Step 4: Simplify right side
    658,425.11x = 338,003,517,540.46
  5. Step 5: Solve for x
    x = 338,003,517,540.46/658,425.11
  6. Step 6: Final answer
    x = 513,351.50

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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.