Home / 1,268,887,319.88-1,902,899,935.08-439,647,428.76

Finding the Fourth Proportional to 1,268,887,319.88, 1,902,899,935.08 and 439,647,428.76

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Solution

The fourth proportional to 1,268,887,319.88, 1,902,899,935.08 and 439,647,428.76 is: 659,321,793.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268,887,319.88 : 1,902,899,935.08 = 439,647,428.76 : x
  2. Step 2: Convert to fraction form
    1,268,887,319.88/1,902,899,935.08 = 439,647,428.76/x
  3. Step 3: Cross multiply
    1,268,887,319.88x = 1,902,899,935.08 × 439,647,428.76
  4. Step 4: Simplify right side
    1,268,887,319.88x = 836,605,063,645,492,864
  5. Step 5: Solve for x
    x = 836,605,063,645,492,864/1,268,887,319.88
  6. Step 6: Final answer
    x = 659,321,793.62

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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.