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Finding the Third Proportional to 2,489,378 and 3,992,619

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Solution

The third proportional to 2,489,378 and 3,992,619 is: 6,403,610.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489,378 : 3,992,619 = 3,992,619 : x
  2. Step 2: Convert to fraction form
    2,489,378/3,992,619 = 3,992,619/x
  3. Step 3: Cross multiply
    2,489,378x = 3,992,619 × 3,992,619
  4. Step 4: Simplify right side
    2,489,378x = 15,941,006,479,161
  5. Step 5: Solve for x
    x = 15,941,006,479,161/2,489,378
  6. Step 6: Final answer
    x = 6,403,610.25

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.