Home / 419,410,923.03-629,015,458.14-128,280,559.41

Finding the Fourth Proportional to 419,410,923.03, 629,015,458.14 and 128,280,559.41

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Solution

The fourth proportional to 419,410,923.03, 629,015,458.14 and 128,280,559.41 is: 192,389,969.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,410,923.03 : 629,015,458.14 = 128,280,559.41 : x
  2. Step 2: Convert to fraction form
    419,410,923.03/629,015,458.14 = 128,280,559.41/x
  3. Step 3: Cross multiply
    419,410,923.03x = 629,015,458.14 × 128,280,559.41
  4. Step 4: Simplify right side
    419,410,923.03x = 80,690,454,847,736,640
  5. Step 5: Solve for x
    x = 80,690,454,847,736,640/419,410,923.03
  6. Step 6: Final answer
    x = 192,389,969.88

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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.