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Finding the Fourth Proportional to 658,526, 908,766.15 and 356,720

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Solution

The fourth proportional to 658,526, 908,766.15 and 356,720 is: 492,273.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,526 : 908,766.15 = 356,720 : x
  2. Step 2: Convert to fraction form
    658,526/908,766.15 = 356,720/x
  3. Step 3: Cross multiply
    658,526x = 908,766.15 × 356,720
  4. Step 4: Simplify right side
    658,526x = 324,175,061,028
  5. Step 5: Solve for x
    x = 324,175,061,028/658,526
  6. Step 6: Final answer
    x = 492,273.75

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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.