Home / 451,998,217.96-678,030,210.16-189,419,198.56

Finding the Fourth Proportional to 451,998,217.96, 678,030,210.16 and 189,419,198.56

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Solution

The fourth proportional to 451,998,217.96, 678,030,210.16 and 189,419,198.56 is: 284,142,578.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,998,217.96 : 678,030,210.16 = 189,419,198.56 : x
  2. Step 2: Convert to fraction form
    451,998,217.96/678,030,210.16 = 189,419,198.56/x
  3. Step 3: Cross multiply
    451,998,217.96x = 678,030,210.16 × 189,419,198.56
  4. Step 4: Simplify right side
    451,998,217.96x = 128,431,939,007,975,568
  5. Step 5: Solve for x
    x = 128,431,939,007,975,568/451,998,217.96
  6. Step 6: Final answer
    x = 284,142,578.23

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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.