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Finding the Fourth Proportional to 664,963.02, 916,923.34 and 449,729.42

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Solution

The fourth proportional to 664,963.02, 916,923.34 and 449,729.42 is: 620,135.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,963.02 : 916,923.34 = 449,729.42 : x
  2. Step 2: Convert to fraction form
    664,963.02/916,923.34 = 449,729.42/x
  3. Step 3: Cross multiply
    664,963.02x = 916,923.34 × 449,729.42
  4. Step 4: Simplify right side
    664,963.02x = 412,367,401,882.66
  5. Step 5: Solve for x
    x = 412,367,401,882.66/664,963.02
  6. Step 6: Final answer
    x = 620,135.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.