Home / 490,286,650.61-676,571,124.62-278,565,515.24

Finding the Fourth Proportional to 490,286,650.61, 676,571,124.62 and 278,565,515.24

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Solution

The fourth proportional to 490,286,650.61, 676,571,124.62 and 278,565,515.24 is: 384,406,517.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,286,650.61 : 676,571,124.62 = 278,565,515.24 : x
  2. Step 2: Convert to fraction form
    490,286,650.61/676,571,124.62 = 278,565,515.24/x
  3. Step 3: Cross multiply
    490,286,650.61x = 676,571,124.62 × 278,565,515.24
  4. Step 4: Simplify right side
    490,286,650.61x = 188,469,383,921,500,864
  5. Step 5: Solve for x
    x = 188,469,383,921,500,864/490,286,650.61
  6. Step 6: Final answer
    x = 384,406,517.46

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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.