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Finding the Third Proportional to 422,928 and 622,704

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Solution

The third proportional to 422,928 and 622,704 is: 916,847.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,928 : 622,704 = 622,704 : x
  2. Step 2: Convert to fraction form
    422,928/622,704 = 622,704/x
  3. Step 3: Cross multiply
    422,928x = 622,704 × 622,704
  4. Step 4: Simplify right side
    422,928x = 387,760,271,616
  5. Step 5: Solve for x
    x = 387,760,271,616/422,928
  6. Step 6: Final answer
    x = 916,847.01

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.