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Finding the Third Proportional to 515,640 and 1,110,268

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Solution

The third proportional to 515,640 and 1,110,268 is: 2,390,611.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,640 : 1,110,268 = 1,110,268 : x
  2. Step 2: Convert to fraction form
    515,640/1,110,268 = 1,110,268/x
  3. Step 3: Cross multiply
    515,640x = 1,110,268 × 1,110,268
  4. Step 4: Simplify right side
    515,640x = 1,232,695,031,824
  5. Step 5: Solve for x
    x = 1,232,695,031,824/515,640
  6. Step 6: Final answer
    x = 2,390,611.73

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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.