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Finding the Fourth Proportional to 658,627.71, 908,907.20 and 356,821.71

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Solution

The fourth proportional to 658,627.71, 908,907.20 and 356,821.71 is: 492,414.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,627.71 : 908,907.20 = 356,821.71 : x
  2. Step 2: Convert to fraction form
    658,627.71/908,907.20 = 356,821.71/x
  3. Step 3: Cross multiply
    658,627.71x = 908,907.20 × 356,821.71
  4. Step 4: Simplify right side
    658,627.71x = 324,317,819,551.20
  5. Step 5: Solve for x
    x = 324,317,819,551.20/658,627.71
  6. Step 6: Final answer
    x = 492,414.48

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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.