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Finding the Third Proportional to 805,478 and 1,128,872

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Solution

The third proportional to 805,478 and 1,128,872 is: 1,582,106.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,478 : 1,128,872 = 1,128,872 : x
  2. Step 2: Convert to fraction form
    805,478/1,128,872 = 1,128,872/x
  3. Step 3: Cross multiply
    805,478x = 1,128,872 × 1,128,872
  4. Step 4: Simplify right side
    805,478x = 1,274,351,992,384
  5. Step 5: Solve for x
    x = 1,274,351,992,384/805,478
  6. Step 6: Final answer
    x = 1,582,106.52

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.