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Finding the Fourth Proportional to 658,639.78, 908,919.33 and 368,251.29

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Solution

The fourth proportional to 658,639.78, 908,919.33 and 368,251.29 is: 508,184.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,639.78 : 908,919.33 = 368,251.29 : x
  2. Step 2: Convert to fraction form
    658,639.78/908,919.33 = 368,251.29/x
  3. Step 3: Cross multiply
    658,639.78x = 908,919.33 × 368,251.29
  4. Step 4: Simplify right side
    658,639.78x = 334,710,715,778.44
  5. Step 5: Solve for x
    x = 334,710,715,778.44/658,639.78
  6. Step 6: Final answer
    x = 508,184.79

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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.