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Finding the Third Proportional to 389,214 and 836,630

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Solution

The third proportional to 389,214 and 836,630 is: 1,798,367.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,214 : 836,630 = 836,630 : x
  2. Step 2: Convert to fraction form
    389,214/836,630 = 836,630/x
  3. Step 3: Cross multiply
    389,214x = 836,630 × 836,630
  4. Step 4: Simplify right side
    389,214x = 699,949,756,900
  5. Step 5: Solve for x
    x = 699,949,756,900/389,214
  6. Step 6: Final answer
    x = 1,798,367.37

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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.