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Finding the Third Proportional to 437,432 and 685,306

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Solution

The third proportional to 437,432 and 685,306 is: 1,073,639.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,432 : 685,306 = 685,306 : x
  2. Step 2: Convert to fraction form
    437,432/685,306 = 685,306/x
  3. Step 3: Cross multiply
    437,432x = 685,306 × 685,306
  4. Step 4: Simplify right side
    437,432x = 469,644,313,636
  5. Step 5: Solve for x
    x = 469,644,313,636/437,432
  6. Step 6: Final answer
    x = 1,073,639.59

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.