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Finding the Fourth Proportional to 668,274.20, 1,002,396.90 and 445,064.60

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Solution

The fourth proportional to 668,274.20, 1,002,396.90 and 445,064.60 is: 667,587.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,274.20 : 1,002,396.90 = 445,064.60 : x
  2. Step 2: Convert to fraction form
    668,274.20/1,002,396.90 = 445,064.60/x
  3. Step 3: Cross multiply
    668,274.20x = 1,002,396.90 × 445,064.60
  4. Step 4: Simplify right side
    668,274.20x = 446,131,375,339.74
  5. Step 5: Solve for x
    x = 446,131,375,339.74/668,274.20
  6. Step 6: Final answer
    x = 667,587.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.