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Finding the Third Proportional to 518,815 and 1,139,775

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Solution

The third proportional to 518,815 and 1,139,775 is: 2,503,950.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,815 : 1,139,775 = 1,139,775 : x
  2. Step 2: Convert to fraction form
    518,815/1,139,775 = 1,139,775/x
  3. Step 3: Cross multiply
    518,815x = 1,139,775 × 1,139,775
  4. Step 4: Simplify right side
    518,815x = 1,299,087,050,625
  5. Step 5: Solve for x
    x = 1,299,087,050,625/518,815
  6. Step 6: Final answer
    x = 2,503,950.45

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.