Home / 664,821,238.40-997,231,857.60-419,933,225.60

Finding the Fourth Proportional to 664,821,238.40, 997,231,857.60 and 419,933,225.60

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Solution

The fourth proportional to 664,821,238.40, 997,231,857.60 and 419,933,225.60 is: 629,899,838.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,821,238.40 : 997,231,857.60 = 419,933,225.60 : x
  2. Step 2: Convert to fraction form
    664,821,238.40/997,231,857.60 = 419,933,225.60/x
  3. Step 3: Cross multiply
    664,821,238.40x = 997,231,857.60 × 419,933,225.60
  4. Step 4: Simplify right side
    664,821,238.40x = 418,770,790,633,047,936
  5. Step 5: Solve for x
    x = 418,770,790,633,047,936/664,821,238.40
  6. Step 6: Final answer
    x = 629,899,838.40

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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.