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Finding the Third Proportional to 679,400 and 1,388,284

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Solution

The third proportional to 679,400 and 1,388,284 is: 2,836,815.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,400 : 1,388,284 = 1,388,284 : x
  2. Step 2: Convert to fraction form
    679,400/1,388,284 = 1,388,284/x
  3. Step 3: Cross multiply
    679,400x = 1,388,284 × 1,388,284
  4. Step 4: Simplify right side
    679,400x = 1,927,332,464,656
  5. Step 5: Solve for x
    x = 1,927,332,464,656/679,400
  6. Step 6: Final answer
    x = 2,836,815.52

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.