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Finding the Third Proportional to 394,638 and 855,804

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Solution

The third proportional to 394,638 and 855,804 is: 1,855,879.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,638 : 855,804 = 855,804 : x
  2. Step 2: Convert to fraction form
    394,638/855,804 = 855,804/x
  3. Step 3: Cross multiply
    394,638x = 855,804 × 855,804
  4. Step 4: Simplify right side
    394,638x = 732,400,486,416
  5. Step 5: Solve for x
    x = 732,400,486,416/394,638
  6. Step 6: Final answer
    x = 1,855,879.28

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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.