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Finding the Third Proportional to 280,492 and 617,080

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Solution

The third proportional to 280,492 and 617,080 is: 1,357,570.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,492 : 617,080 = 617,080 : x
  2. Step 2: Convert to fraction form
    280,492/617,080 = 617,080/x
  3. Step 3: Cross multiply
    280,492x = 617,080 × 617,080
  4. Step 4: Simplify right side
    280,492x = 380,787,726,400
  5. Step 5: Solve for x
    x = 380,787,726,400/280,492
  6. Step 6: Final answer
    x = 1,357,570.72

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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.