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Finding the Third Proportional to 290,395 and 622,828

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Solution

The third proportional to 290,395 and 622,828 is: 1,335,817.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,395 : 622,828 = 622,828 : x
  2. Step 2: Convert to fraction form
    290,395/622,828 = 622,828/x
  3. Step 3: Cross multiply
    290,395x = 622,828 × 622,828
  4. Step 4: Simplify right side
    290,395x = 387,914,717,584
  5. Step 5: Solve for x
    x = 387,914,717,584/290,395
  6. Step 6: Final answer
    x = 1,335,817.48

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.