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Finding the Third Proportional to 263,808 and 622,128

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Solution

The third proportional to 263,808 and 622,128 is: 1,467,139.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,808 : 622,128 = 622,128 : x
  2. Step 2: Convert to fraction form
    263,808/622,128 = 622,128/x
  3. Step 3: Cross multiply
    263,808x = 622,128 × 622,128
  4. Step 4: Simplify right side
    263,808x = 387,043,248,384
  5. Step 5: Solve for x
    x = 387,043,248,384/263,808
  6. Step 6: Final answer
    x = 1,467,139.92

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.