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Finding the Third Proportional to 859,448 and 1,821,349

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Solution

The third proportional to 859,448 and 1,821,349 is: 3,859,817.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,448 : 1,821,349 = 1,821,349 : x
  2. Step 2: Convert to fraction form
    859,448/1,821,349 = 1,821,349/x
  3. Step 3: Cross multiply
    859,448x = 1,821,349 × 1,821,349
  4. Step 4: Simplify right side
    859,448x = 3,317,312,179,801
  5. Step 5: Solve for x
    x = 3,317,312,179,801/859,448
  6. Step 6: Final answer
    x = 3,859,817.21

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.