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Finding the Third Proportional to 515,187 and 788,079

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Solution

The third proportional to 515,187 and 788,079 is: 1,205,520.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,187 : 788,079 = 788,079 : x
  2. Step 2: Convert to fraction form
    515,187/788,079 = 788,079/x
  3. Step 3: Cross multiply
    515,187x = 788,079 × 788,079
  4. Step 4: Simplify right side
    515,187x = 621,068,510,241
  5. Step 5: Solve for x
    x = 621,068,510,241/515,187
  6. Step 6: Final answer
    x = 1,205,520.54

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.