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Finding the Third Proportional to 307,391.25 and 629,955

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Solution

The third proportional to 307,391.25 and 629,955 is: 1,291,003.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,391.25 : 629,955 = 629,955 : x
  2. Step 2: Convert to fraction form
    307,391.25/629,955 = 629,955/x
  3. Step 3: Cross multiply
    307,391.25x = 629,955 × 629,955
  4. Step 4: Simplify right side
    307,391.25x = 396,843,302,025
  5. Step 5: Solve for x
    x = 396,843,302,025/307,391.25
  6. Step 6: Final answer
    x = 1,291,003.90

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.