Home / 419,922,420.80-629,883,631.20-394,413,252.80

Finding the Fourth Proportional to 419,922,420.80, 629,883,631.20 and 394,413,252.80

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Solution

The fourth proportional to 419,922,420.80, 629,883,631.20 and 394,413,252.80 is: 591,619,879.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,922,420.80 : 629,883,631.20 = 394,413,252.80 : x
  2. Step 2: Convert to fraction form
    419,922,420.80/629,883,631.20 = 394,413,252.80/x
  3. Step 3: Cross multiply
    419,922,420.80x = 629,883,631.20 × 394,413,252.80
  4. Step 4: Simplify right side
    419,922,420.80x = 248,434,451,867,067,584
  5. Step 5: Solve for x
    x = 248,434,451,867,067,584/419,922,420.80
  6. Step 6: Final answer
    x = 591,619,879.20

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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.