Home / 479,040,977.20-661,085,158.44-280,945,349.68

Finding the Fourth Proportional to 479,040,977.20, 661,085,158.44 and 280,945,349.68

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Solution

The fourth proportional to 479,040,977.20, 661,085,158.44 and 280,945,349.68 is: 387,709,632.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,040,977.20 : 661,085,158.44 = 280,945,349.68 : x
  2. Step 2: Convert to fraction form
    479,040,977.20/661,085,158.44 = 280,945,349.68/x
  3. Step 3: Cross multiply
    479,040,977.20x = 661,085,158.44 × 280,945,349.68
  4. Step 4: Simplify right side
    479,040,977.20x = 185,728,801,006,184,032
  5. Step 5: Solve for x
    x = 185,728,801,006,184,032/479,040,977.20
  6. Step 6: Final answer
    x = 387,709,632.05

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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.