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Finding the Third Proportional to 370,722 and 809,400

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Solution

The third proportional to 370,722 and 809,400 is: 1,767,168.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,722 : 809,400 = 809,400 : x
  2. Step 2: Convert to fraction form
    370,722/809,400 = 809,400/x
  3. Step 3: Cross multiply
    370,722x = 809,400 × 809,400
  4. Step 4: Simplify right side
    370,722x = 655,128,360,000
  5. Step 5: Solve for x
    x = 655,128,360,000/370,722
  6. Step 6: Final answer
    x = 1,767,168.82

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.