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Finding the Third Proportional to 631,331 and 1,380,761

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Solution

The third proportional to 631,331 and 1,380,761 is: 3,019,812.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,331 : 1,380,761 = 1,380,761 : x
  2. Step 2: Convert to fraction form
    631,331/1,380,761 = 1,380,761/x
  3. Step 3: Cross multiply
    631,331x = 1,380,761 × 1,380,761
  4. Step 4: Simplify right side
    631,331x = 1,906,500,939,121
  5. Step 5: Solve for x
    x = 1,906,500,939,121/631,331
  6. Step 6: Final answer
    x = 3,019,812.01

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.