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Finding the Third Proportional to 381,588 and 839,280

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Solution

The third proportional to 381,588 and 839,280 is: 1,845,946.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,588 : 839,280 = 839,280 : x
  2. Step 2: Convert to fraction form
    381,588/839,280 = 839,280/x
  3. Step 3: Cross multiply
    381,588x = 839,280 × 839,280
  4. Step 4: Simplify right side
    381,588x = 704,390,918,400
  5. Step 5: Solve for x
    x = 704,390,918,400/381,588
  6. Step 6: Final answer
    x = 1,845,946.20

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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.