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Finding the Fourth Proportional to 664,406.70, 996,318.45 and 264,914.70

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Solution

The fourth proportional to 664,406.70, 996,318.45 and 264,914.70 is: 397,255.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,406.70 : 996,318.45 = 264,914.70 : x
  2. Step 2: Convert to fraction form
    664,406.70/996,318.45 = 264,914.70/x
  3. Step 3: Cross multiply
    664,406.70x = 996,318.45 × 264,914.70
  4. Step 4: Simplify right side
    664,406.70x = 263,939,403,286.22
  5. Step 5: Solve for x
    x = 263,939,403,286.22/664,406.70
  6. Step 6: Final answer
    x = 397,255.78

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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.