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Finding the Third Proportional to 394,483 and 558,191

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Solution

The third proportional to 394,483 and 558,191 is: 789,836.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,483 : 558,191 = 558,191 : x
  2. Step 2: Convert to fraction form
    394,483/558,191 = 558,191/x
  3. Step 3: Cross multiply
    394,483x = 558,191 × 558,191
  4. Step 4: Simplify right side
    394,483x = 311,577,192,481
  5. Step 5: Solve for x
    x = 311,577,192,481/394,483
  6. Step 6: Final answer
    x = 789,836.81

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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.