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Finding the Fourth Proportional to 664,008.80, 994,825.20 and 403,872.80

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Solution

The fourth proportional to 664,008.80, 994,825.20 and 403,872.80 is: 605,086.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,008.80 : 994,825.20 = 403,872.80 : x
  2. Step 2: Convert to fraction form
    664,008.80/994,825.20 = 403,872.80/x
  3. Step 3: Cross multiply
    664,008.80x = 994,825.20 × 403,872.80
  4. Step 4: Simplify right side
    664,008.80x = 401,782,839,034.56
  5. Step 5: Solve for x
    x = 401,782,839,034.56/664,008.80
  6. Step 6: Final answer
    x = 605,086.62

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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.