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Finding the Third Proportional to 687,489 and 1,480,295.50

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Solution

The third proportional to 687,489 and 1,480,295.50 is: 3,187,359.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,489 : 1,480,295.50 = 1,480,295.50 : x
  2. Step 2: Convert to fraction form
    687,489/1,480,295.50 = 1,480,295.50/x
  3. Step 3: Cross multiply
    687,489x = 1,480,295.50 × 1,480,295.50
  4. Step 4: Simplify right side
    687,489x = 2,191,274,767,320.25
  5. Step 5: Solve for x
    x = 2,191,274,767,320.25/687,489
  6. Step 6: Final answer
    x = 3,187,359.75

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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.