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Finding the Third Proportional to 391,728 and 845,648

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Solution

The third proportional to 391,728 and 845,648 is: 1,825,553.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,728 : 845,648 = 845,648 : x
  2. Step 2: Convert to fraction form
    391,728/845,648 = 845,648/x
  3. Step 3: Cross multiply
    391,728x = 845,648 × 845,648
  4. Step 4: Simplify right side
    391,728x = 715,120,539,904
  5. Step 5: Solve for x
    x = 715,120,539,904/391,728
  6. Step 6: Final answer
    x = 1,825,553.80

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.