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Finding the Third Proportional to 412,790 and 843,072

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Solution

The third proportional to 412,790 and 843,072 is: 1,721,869.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,790 : 843,072 = 843,072 : x
  2. Step 2: Convert to fraction form
    412,790/843,072 = 843,072/x
  3. Step 3: Cross multiply
    412,790x = 843,072 × 843,072
  4. Step 4: Simplify right side
    412,790x = 710,770,397,184
  5. Step 5: Solve for x
    x = 710,770,397,184/412,790
  6. Step 6: Final answer
    x = 1,721,869.22

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.