Home / 3,928,002,201.42-5,420,566,201.23-2,143,868,443.53

Finding the Fourth Proportional to 3,928,002,201.42, 5,420,566,201.23 and 2,143,868,443.53

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Solution

The fourth proportional to 3,928,002,201.42, 5,420,566,201.23 and 2,143,868,443.53 is: 2,958,496,515.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928,002,201.42 : 5,420,566,201.23 = 2,143,868,443.53 : x
  2. Step 2: Convert to fraction form
    3,928,002,201.42/5,420,566,201.23 = 2,143,868,443.53/x
  3. Step 3: Cross multiply
    3,928,002,201.42x = 5,420,566,201.23 × 2,143,868,443.53
  4. Step 4: Simplify right side
    3,928,002,201.42x = 11,620,980,824,882,284,544
  5. Step 5: Solve for x
    x = 11,620,980,824,882,284,544/3,928,002,201.42
  6. Step 6: Final answer
    x = 2,958,496,515.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.