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Finding the Third Proportional to 280,836 and 618,600

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Solution

The third proportional to 280,836 and 618,600 is: 1,362,595.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,836 : 618,600 = 618,600 : x
  2. Step 2: Convert to fraction form
    280,836/618,600 = 618,600/x
  3. Step 3: Cross multiply
    280,836x = 618,600 × 618,600
  4. Step 4: Simplify right side
    280,836x = 382,665,960,000
  5. Step 5: Solve for x
    x = 382,665,960,000/280,836
  6. Step 6: Final answer
    x = 1,362,595.82

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.