Home / 490,742,575.91-677,221,540.83-279,049,422.51

Finding the Fourth Proportional to 490,742,575.91, 677,221,540.83 and 279,049,422.51

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Solution

The fourth proportional to 490,742,575.91, 677,221,540.83 and 279,049,422.51 is: 385,086,375.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,742,575.91 : 677,221,540.83 = 279,049,422.51 : x
  2. Step 2: Convert to fraction form
    490,742,575.91/677,221,540.83 = 279,049,422.51/x
  3. Step 3: Cross multiply
    490,742,575.91x = 677,221,540.83 × 279,049,422.51
  4. Step 4: Simplify right side
    490,742,575.91x = 188,978,279,879,719,968
  5. Step 5: Solve for x
    x = 188,978,279,879,719,968/490,742,575.91
  6. Step 6: Final answer
    x = 385,086,375.54

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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.