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Finding the Fourth Proportional to 658,271.28, 908,415 and 371,791.92

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Solution

The fourth proportional to 658,271.28, 908,415 and 371,791.92 is: 513,073.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,271.28 : 908,415 = 371,791.92 : x
  2. Step 2: Convert to fraction form
    658,271.28/908,415 = 371,791.92/x
  3. Step 3: Cross multiply
    658,271.28x = 908,415 × 371,791.92
  4. Step 4: Simplify right side
    658,271.28x = 337,741,357,006.80
  5. Step 5: Solve for x
    x = 337,741,357,006.80/658,271.28
  6. Step 6: Final answer
    x = 513,073.21

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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.