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Finding the Third Proportional to 299,256 and 640,548

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Solution

The third proportional to 299,256 and 640,548 is: 1,371,072.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,256 : 640,548 = 640,548 : x
  2. Step 2: Convert to fraction form
    299,256/640,548 = 640,548/x
  3. Step 3: Cross multiply
    299,256x = 640,548 × 640,548
  4. Step 4: Simplify right side
    299,256x = 410,301,740,304
  5. Step 5: Solve for x
    x = 410,301,740,304/299,256
  6. Step 6: Final answer
    x = 1,371,072.73

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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.