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Finding the Third Proportional to 431,112 and 652,631

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Solution

The third proportional to 431,112 and 652,631 is: 987,973.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,112 : 652,631 = 652,631 : x
  2. Step 2: Convert to fraction form
    431,112/652,631 = 652,631/x
  3. Step 3: Cross multiply
    431,112x = 652,631 × 652,631
  4. Step 4: Simplify right side
    431,112x = 425,927,222,161
  5. Step 5: Solve for x
    x = 425,927,222,161/431,112
  6. Step 6: Final answer
    x = 987,973.48

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.