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Finding the Third Proportional to 280,980 and 608,616

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Solution

The third proportional to 280,980 and 608,616 is: 1,318,291.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,980 : 608,616 = 608,616 : x
  2. Step 2: Convert to fraction form
    280,980/608,616 = 608,616/x
  3. Step 3: Cross multiply
    280,980x = 608,616 × 608,616
  4. Step 4: Simplify right side
    280,980x = 370,413,435,456
  5. Step 5: Solve for x
    x = 370,413,435,456/280,980
  6. Step 6: Final answer
    x = 1,318,291.11

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.