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Finding the Fourth Proportional to 658,424.62, 908,699.71 and 371,963.15

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Solution

The fourth proportional to 658,424.62, 908,699.71 and 371,963.15 is: 513,350.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,424.62 : 908,699.71 = 371,963.15 : x
  2. Step 2: Convert to fraction form
    658,424.62/908,699.71 = 371,963.15/x
  3. Step 3: Cross multiply
    658,424.62x = 908,699.71 × 371,963.15
  4. Step 4: Simplify right side
    658,424.62x = 338,002,804,675.87
  5. Step 5: Solve for x
    x = 338,002,804,675.87/658,424.62
  6. Step 6: Final answer
    x = 513,350.80

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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.