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Finding the Fourth Proportional to 558,489.70, 770,719.14 and 303,842.71

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Solution

The fourth proportional to 558,489.70, 770,719.14 and 303,842.71 is: 419,304.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,489.70 : 770,719.14 = 303,842.71 : x
  2. Step 2: Convert to fraction form
    558,489.70/770,719.14 = 303,842.71/x
  3. Step 3: Cross multiply
    558,489.70x = 770,719.14 × 303,842.71
  4. Step 4: Simplify right side
    558,489.70x = 234,177,386,773.66
  5. Step 5: Solve for x
    x = 234,177,386,773.66/558,489.70
  6. Step 6: Final answer
    x = 419,304.76

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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.