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Finding the Third Proportional to 687,240 and 1,479,346.50

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Solution

The third proportional to 687,240 and 1,479,346.50 is: 3,184,427.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,240 : 1,479,346.50 = 1,479,346.50 : x
  2. Step 2: Convert to fraction form
    687,240/1,479,346.50 = 1,479,346.50/x
  3. Step 3: Cross multiply
    687,240x = 1,479,346.50 × 1,479,346.50
  4. Step 4: Simplify right side
    687,240x = 2,188,466,067,062.25
  5. Step 5: Solve for x
    x = 2,188,466,067,062.25/687,240
  6. Step 6: Final answer
    x = 3,184,427.66

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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.