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Finding the Third Proportional to 561,030 and 789,129

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Solution

The third proportional to 561,030 and 789,129 is: 1,109,966.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,030 : 789,129 = 789,129 : x
  2. Step 2: Convert to fraction form
    561,030/789,129 = 789,129/x
  3. Step 3: Cross multiply
    561,030x = 789,129 × 789,129
  4. Step 4: Simplify right side
    561,030x = 622,724,578,641
  5. Step 5: Solve for x
    x = 622,724,578,641/561,030
  6. Step 6: Final answer
    x = 1,109,966.63

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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.