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Finding the Third Proportional to 388,615 and 836,279

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Solution

The third proportional to 388,615 and 836,279 is: 1,799,628.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,615 : 836,279 = 836,279 : x
  2. Step 2: Convert to fraction form
    388,615/836,279 = 836,279/x
  3. Step 3: Cross multiply
    388,615x = 836,279 × 836,279
  4. Step 4: Simplify right side
    388,615x = 699,362,565,841
  5. Step 5: Solve for x
    x = 699,362,565,841/388,615
  6. Step 6: Final answer
    x = 1,799,628.34

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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.