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Finding the Third Proportional to 855,630 and 1,821,372

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Solution

The third proportional to 855,630 and 1,821,372 is: 3,877,138.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,630 : 1,821,372 = 1,821,372 : x
  2. Step 2: Convert to fraction form
    855,630/1,821,372 = 1,821,372/x
  3. Step 3: Cross multiply
    855,630x = 1,821,372 × 1,821,372
  4. Step 4: Simplify right side
    855,630x = 3,317,395,962,384
  5. Step 5: Solve for x
    x = 3,317,395,962,384/855,630
  6. Step 6: Final answer
    x = 3,877,138.44

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.