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Finding the Fourth Proportional to 658,489.96, 908,715.30 and 356,685.16

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Solution

The fourth proportional to 658,489.96, 908,715.30 and 356,685.16 is: 492,225.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,489.96 : 908,715.30 = 356,685.16 : x
  2. Step 2: Convert to fraction form
    658,489.96/908,715.30 = 356,685.16/x
  3. Step 3: Cross multiply
    658,489.96x = 908,715.30 × 356,685.16
  4. Step 4: Simplify right side
    658,489.96x = 324,125,262,174.95
  5. Step 5: Solve for x
    x = 324,125,262,174.95/658,489.96
  6. Step 6: Final answer
    x = 492,225.06

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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.