Home / 647,215,340.64-970,716,722.64-278,651,067.20

Finding the Fourth Proportional to 647,215,340.64, 970,716,722.64 and 278,651,067.20

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Solution

The fourth proportional to 647,215,340.64, 970,716,722.64 and 278,651,067.20 is: 417,930,839.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,215,340.64 : 970,716,722.64 = 278,651,067.20 : x
  2. Step 2: Convert to fraction form
    647,215,340.64/970,716,722.64 = 278,651,067.20/x
  3. Step 3: Cross multiply
    647,215,340.64x = 970,716,722.64 × 278,651,067.20
  4. Step 4: Simplify right side
    647,215,340.64x = 270,491,250,712,522,400
  5. Step 5: Solve for x
    x = 270,491,250,712,522,400/647,215,340.64
  6. Step 6: Final answer
    x = 417,930,839.60

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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.