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Finding the Third Proportional to 439,134 and 979,239

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Solution

The third proportional to 439,134 and 979,239 is: 2,183,636.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,134 : 979,239 = 979,239 : x
  2. Step 2: Convert to fraction form
    439,134/979,239 = 979,239/x
  3. Step 3: Cross multiply
    439,134x = 979,239 × 979,239
  4. Step 4: Simplify right side
    439,134x = 958,909,019,121
  5. Step 5: Solve for x
    x = 958,909,019,121/439,134
  6. Step 6: Final answer
    x = 2,183,636.47

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.