Home / 3,928,002,122.37-5,420,566,092.78-2,143,868,364.48

Finding the Fourth Proportional to 3,928,002,122.37, 5,420,566,092.78 and 2,143,868,364.48

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Solution

The fourth proportional to 3,928,002,122.37, 5,420,566,092.78 and 2,143,868,364.48 is: 2,958,496,406.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928,002,122.37 : 5,420,566,092.78 = 2,143,868,364.48 : x
  2. Step 2: Convert to fraction form
    3,928,002,122.37/5,420,566,092.78 = 2,143,868,364.48/x
  3. Step 3: Cross multiply
    3,928,002,122.37x = 5,420,566,092.78 × 2,143,868,364.48
  4. Step 4: Simplify right side
    3,928,002,122.37x = 11,620,980,163,884,001,280
  5. Step 5: Solve for x
    x = 11,620,980,163,884,001,280/3,928,002,122.37
  6. Step 6: Final answer
    x = 2,958,496,406.53

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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.