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Finding the Third Proportional to 989,469 and 2,155,997.25

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Solution

The third proportional to 989,469 and 2,155,997.25 is: 4,697,796.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,469 : 2,155,997.25 = 2,155,997.25 : x
  2. Step 2: Convert to fraction form
    989,469/2,155,997.25 = 2,155,997.25/x
  3. Step 3: Cross multiply
    989,469x = 2,155,997.25 × 2,155,997.25
  4. Step 4: Simplify right side
    989,469x = 4,648,324,142,007.56
  5. Step 5: Solve for x
    x = 4,648,324,142,007.56/989,469
  6. Step 6: Final answer
    x = 4,697,796.64

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.