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Finding the Third Proportional to 515,131 and 1,128,676

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Solution

The third proportional to 515,131 and 1,128,676 is: 2,472,981.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,131 : 1,128,676 = 1,128,676 : x
  2. Step 2: Convert to fraction form
    515,131/1,128,676 = 1,128,676/x
  3. Step 3: Cross multiply
    515,131x = 1,128,676 × 1,128,676
  4. Step 4: Simplify right side
    515,131x = 1,273,909,512,976
  5. Step 5: Solve for x
    x = 1,273,909,512,976/515,131
  6. Step 6: Final answer
    x = 2,472,981.66

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.