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Finding the Third Proportional to 290,407.78 and 622,843.17

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Solution

The third proportional to 290,407.78 and 622,843.17 is: 1,335,823.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,407.78 : 622,843.17 = 622,843.17 : x
  2. Step 2: Convert to fraction form
    290,407.78/622,843.17 = 622,843.17/x
  3. Step 3: Cross multiply
    290,407.78x = 622,843.17 × 622,843.17
  4. Step 4: Simplify right side
    290,407.78x = 387,933,616,751.31
  5. Step 5: Solve for x
    x = 387,933,616,751.31/290,407.78
  6. Step 6: Final answer
    x = 1,335,823.77

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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.