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Finding the Third Proportional to 280,818 and 605,920

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Solution

The third proportional to 280,818 and 605,920 is: 1,307,391.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,818 : 605,920 = 605,920 : x
  2. Step 2: Convert to fraction form
    280,818/605,920 = 605,920/x
  3. Step 3: Cross multiply
    280,818x = 605,920 × 605,920
  4. Step 4: Simplify right side
    280,818x = 367,139,046,400
  5. Step 5: Solve for x
    x = 367,139,046,400/280,818
  6. Step 6: Final answer
    x = 1,307,391.43

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.