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Finding the Third Proportional to 787,638 and 1,727,785.50

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Solution

The third proportional to 787,638 and 1,727,785.50 is: 3,790,120.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,638 : 1,727,785.50 = 1,727,785.50 : x
  2. Step 2: Convert to fraction form
    787,638/1,727,785.50 = 1,727,785.50/x
  3. Step 3: Cross multiply
    787,638x = 1,727,785.50 × 1,727,785.50
  4. Step 4: Simplify right side
    787,638x = 2,985,242,734,010.25
  5. Step 5: Solve for x
    x = 2,985,242,734,010.25/787,638
  6. Step 6: Final answer
    x = 3,790,120.25

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.