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Finding the Third Proportional to 890,391.75 and 1,380,500.25

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Solution

The third proportional to 890,391.75 and 1,380,500.25 is: 2,140,384.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,391.75 : 1,380,500.25 = 1,380,500.25 : x
  2. Step 2: Convert to fraction form
    890,391.75/1,380,500.25 = 1,380,500.25/x
  3. Step 3: Cross multiply
    890,391.75x = 1,380,500.25 × 1,380,500.25
  4. Step 4: Simplify right side
    890,391.75x = 1,905,780,940,250.06
  5. Step 5: Solve for x
    x = 1,905,780,940,250.06/890,391.75
  6. Step 6: Final answer
    x = 2,140,384.77

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.