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Finding the Third Proportional to 840,236 and 1,291,503

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Solution

The third proportional to 840,236 and 1,291,503 is: 1,985,132.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,236 : 1,291,503 = 1,291,503 : x
  2. Step 2: Convert to fraction form
    840,236/1,291,503 = 1,291,503/x
  3. Step 3: Cross multiply
    840,236x = 1,291,503 × 1,291,503
  4. Step 4: Simplify right side
    840,236x = 1,667,979,999,009
  5. Step 5: Solve for x
    x = 1,667,979,999,009/840,236
  6. Step 6: Final answer
    x = 1,985,132.75

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.