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Finding the Third Proportional to 628,560 and 1,356,720

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Solution

The third proportional to 628,560 and 1,356,720 is: 2,928,422.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,560 : 1,356,720 = 1,356,720 : x
  2. Step 2: Convert to fraction form
    628,560/1,356,720 = 1,356,720/x
  3. Step 3: Cross multiply
    628,560x = 1,356,720 × 1,356,720
  4. Step 4: Simplify right side
    628,560x = 1,840,689,158,400
  5. Step 5: Solve for x
    x = 1,840,689,158,400/628,560
  6. Step 6: Final answer
    x = 2,928,422.36

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.