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Finding the Third Proportional to 414,621 and 871,020

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Solution

The third proportional to 414,621 and 871,020 is: 1,829,805.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,621 : 871,020 = 871,020 : x
  2. Step 2: Convert to fraction form
    414,621/871,020 = 871,020/x
  3. Step 3: Cross multiply
    414,621x = 871,020 × 871,020
  4. Step 4: Simplify right side
    414,621x = 758,675,840,400
  5. Step 5: Solve for x
    x = 758,675,840,400/414,621
  6. Step 6: Final answer
    x = 1,829,805.63

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.