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Finding the Third Proportional to 515,828 and 789,006

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Solution

The third proportional to 515,828 and 789,006 is: 1,206,856.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,828 : 789,006 = 789,006 : x
  2. Step 2: Convert to fraction form
    515,828/789,006 = 789,006/x
  3. Step 3: Cross multiply
    515,828x = 789,006 × 789,006
  4. Step 4: Simplify right side
    515,828x = 622,530,468,036
  5. Step 5: Solve for x
    x = 622,530,468,036/515,828
  6. Step 6: Final answer
    x = 1,206,856.68

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.