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Finding the Fourth Proportional to 658,431.32, 908,708.98 and 371,969.85

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Solution

The fourth proportional to 658,431.32, 908,708.98 and 371,969.85 is: 513,360.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,431.32 : 908,708.98 = 371,969.85 : x
  2. Step 2: Convert to fraction form
    658,431.32/908,708.98 = 371,969.85/x
  3. Step 3: Cross multiply
    658,431.32x = 908,708.98 × 371,969.85
  4. Step 4: Simplify right side
    658,431.32x = 338,012,342,984.25
  5. Step 5: Solve for x
    x = 338,012,342,984.25/658,431.32
  6. Step 6: Final answer
    x = 513,360.06

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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.