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Finding the Fourth Proportional to 658,639.97, 908,926.91 and 356,833.97

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Solution

The fourth proportional to 658,639.97, 908,926.91 and 356,833.97 is: 492,432.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,639.97 : 908,926.91 = 356,833.97 : x
  2. Step 2: Convert to fraction form
    658,639.97/908,926.91 = 356,833.97/x
  3. Step 3: Cross multiply
    658,639.97x = 908,926.91 × 356,833.97
  4. Step 4: Simplify right side
    658,639.97x = 324,335,995,950.96
  5. Step 5: Solve for x
    x = 324,335,995,950.96/658,639.97
  6. Step 6: Final answer
    x = 492,432.91

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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.