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Finding the Third Proportional to 784,620 and 1,212,418

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Solution

The third proportional to 784,620 and 1,212,418 is: 1,873,464.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,620 : 1,212,418 = 1,212,418 : x
  2. Step 2: Convert to fraction form
    784,620/1,212,418 = 1,212,418/x
  3. Step 3: Cross multiply
    784,620x = 1,212,418 × 1,212,418
  4. Step 4: Simplify right side
    784,620x = 1,469,957,406,724
  5. Step 5: Solve for x
    x = 1,469,957,406,724/784,620
  6. Step 6: Final answer
    x = 1,873,464.11

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.