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Finding the Third Proportional to 621,632 and 928,612

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Solution

The third proportional to 621,632 and 928,612 is: 1,387,187.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,632 : 928,612 = 928,612 : x
  2. Step 2: Convert to fraction form
    621,632/928,612 = 928,612/x
  3. Step 3: Cross multiply
    621,632x = 928,612 × 928,612
  4. Step 4: Simplify right side
    621,632x = 862,320,246,544
  5. Step 5: Solve for x
    x = 862,320,246,544/621,632
  6. Step 6: Final answer
    x = 1,387,187.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.