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Finding the Fourth Proportional to 658,445.76, 908,655.30 and 356,639.76

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Solution

The fourth proportional to 658,445.76, 908,655.30 and 356,639.76 is: 492,162.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,445.76 : 908,655.30 = 356,639.76 : x
  2. Step 2: Convert to fraction form
    658,445.76/908,655.30 = 356,639.76/x
  3. Step 3: Cross multiply
    658,445.76x = 908,655.30 × 356,639.76
  4. Step 4: Simplify right side
    658,445.76x = 324,062,608,114.73
  5. Step 5: Solve for x
    x = 324,062,608,114.73/658,445.76
  6. Step 6: Final answer
    x = 492,162.95

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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.