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Finding the Third Proportional to 310,828 and 472,317

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Solution

The third proportional to 310,828 and 472,317 is: 717,706.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,828 : 472,317 = 472,317 : x
  2. Step 2: Convert to fraction form
    310,828/472,317 = 472,317/x
  3. Step 3: Cross multiply
    310,828x = 472,317 × 472,317
  4. Step 4: Simplify right side
    310,828x = 223,083,348,489
  5. Step 5: Solve for x
    x = 223,083,348,489/310,828
  6. Step 6: Final answer
    x = 717,706.73

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.