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Finding the Third Proportional to 291,757 and 628,155

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Solution

The third proportional to 291,757 and 628,155 is: 1,352,422.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,757 : 628,155 = 628,155 : x
  2. Step 2: Convert to fraction form
    291,757/628,155 = 628,155/x
  3. Step 3: Cross multiply
    291,757x = 628,155 × 628,155
  4. Step 4: Simplify right side
    291,757x = 394,578,704,025
  5. Step 5: Solve for x
    x = 394,578,704,025/291,757
  6. Step 6: Final answer
    x = 1,352,422.41

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.