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Finding the Third Proportional to 731,129 and 1,692,438

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Solution

The third proportional to 731,129 and 1,692,438 is: 3,917,703.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,129 : 1,692,438 = 1,692,438 : x
  2. Step 2: Convert to fraction form
    731,129/1,692,438 = 1,692,438/x
  3. Step 3: Cross multiply
    731,129x = 1,692,438 × 1,692,438
  4. Step 4: Simplify right side
    731,129x = 2,864,346,383,844
  5. Step 5: Solve for x
    x = 2,864,346,383,844/731,129
  6. Step 6: Final answer
    x = 3,917,703.15

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.