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Finding the Third Proportional to 838,638 and 1,117,332

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Solution

The third proportional to 838,638 and 1,117,332 is: 1,488,640.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,638 : 1,117,332 = 1,117,332 : x
  2. Step 2: Convert to fraction form
    838,638/1,117,332 = 1,117,332/x
  3. Step 3: Cross multiply
    838,638x = 1,117,332 × 1,117,332
  4. Step 4: Simplify right side
    838,638x = 1,248,430,798,224
  5. Step 5: Solve for x
    x = 1,248,430,798,224/838,638
  6. Step 6: Final answer
    x = 1,488,640.87

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.