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Finding the Third Proportional to 394,281 and 557,898

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Solution

The third proportional to 394,281 and 557,898 is: 789,412.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,281 : 557,898 = 557,898 : x
  2. Step 2: Convert to fraction form
    394,281/557,898 = 557,898/x
  3. Step 3: Cross multiply
    394,281x = 557,898 × 557,898
  4. Step 4: Simplify right side
    394,281x = 311,250,178,404
  5. Step 5: Solve for x
    x = 311,250,178,404/394,281
  6. Step 6: Final answer
    x = 789,412.07

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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.