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Finding the Third Proportional to 887,780 and 1,391,170

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Solution

The third proportional to 887,780 and 1,391,170 is: 2,179,992.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,780 : 1,391,170 = 1,391,170 : x
  2. Step 2: Convert to fraction form
    887,780/1,391,170 = 1,391,170/x
  3. Step 3: Cross multiply
    887,780x = 1,391,170 × 1,391,170
  4. Step 4: Simplify right side
    887,780x = 1,935,353,968,900
  5. Step 5: Solve for x
    x = 1,935,353,968,900/887,780
  6. Step 6: Final answer
    x = 2,179,992.76

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.