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Finding the Third Proportional to 295,986 and 641,868

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Solution

The third proportional to 295,986 and 641,868 is: 1,391,939.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,986 : 641,868 = 641,868 : x
  2. Step 2: Convert to fraction form
    295,986/641,868 = 641,868/x
  3. Step 3: Cross multiply
    295,986x = 641,868 × 641,868
  4. Step 4: Simplify right side
    295,986x = 411,994,529,424
  5. Step 5: Solve for x
    x = 411,994,529,424/295,986
  6. Step 6: Final answer
    x = 1,391,939.25

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.