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Finding the Third Proportional to 291,764 and 628,168

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Solution

The third proportional to 291,764 and 628,168 is: 1,352,445.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,764 : 628,168 = 628,168 : x
  2. Step 2: Convert to fraction form
    291,764/628,168 = 628,168/x
  3. Step 3: Cross multiply
    291,764x = 628,168 × 628,168
  4. Step 4: Simplify right side
    291,764x = 394,595,036,224
  5. Step 5: Solve for x
    x = 394,595,036,224/291,764
  6. Step 6: Final answer
    x = 1,352,445.94

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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.