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Finding the Third Proportional to 339,868 and 509,932

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Solution

The third proportional to 339,868 and 509,932 is: 765,093.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,868 : 509,932 = 509,932 : x
  2. Step 2: Convert to fraction form
    339,868/509,932 = 509,932/x
  3. Step 3: Cross multiply
    339,868x = 509,932 × 509,932
  4. Step 4: Simplify right side
    339,868x = 260,030,644,624
  5. Step 5: Solve for x
    x = 260,030,644,624/339,868
  6. Step 6: Final answer
    x = 765,093.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.