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Finding the Third Proportional to 394,481.50 and 558,187.75

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Solution

The third proportional to 394,481.50 and 558,187.75 is: 789,830.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,481.50 : 558,187.75 = 558,187.75 : x
  2. Step 2: Convert to fraction form
    394,481.50/558,187.75 = 558,187.75/x
  3. Step 3: Cross multiply
    394,481.50x = 558,187.75 × 558,187.75
  4. Step 4: Simplify right side
    394,481.50x = 311,573,564,250.06
  5. Step 5: Solve for x
    x = 311,573,564,250.06/394,481.50
  6. Step 6: Final answer
    x = 789,830.61

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.