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Finding the Third Proportional to 394,587 and 855,571

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Solution

The third proportional to 394,587 and 855,571 is: 1,855,108.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,587 : 855,571 = 855,571 : x
  2. Step 2: Convert to fraction form
    394,587/855,571 = 855,571/x
  3. Step 3: Cross multiply
    394,587x = 855,571 × 855,571
  4. Step 4: Simplify right side
    394,587x = 732,001,736,041
  5. Step 5: Solve for x
    x = 732,001,736,041/394,587
  6. Step 6: Final answer
    x = 1,855,108.60

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.