Home / 398,587,891.20-597,976,315.20-204,529,257.60

Finding the Fourth Proportional to 398,587,891.20, 597,976,315.20 and 204,529,257.60

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Solution

The fourth proportional to 398,587,891.20, 597,976,315.20 and 204,529,257.60 is: 306,842,366.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,587,891.20 : 597,976,315.20 = 204,529,257.60 : x
  2. Step 2: Convert to fraction form
    398,587,891.20/597,976,315.20 = 204,529,257.60/x
  3. Step 3: Cross multiply
    398,587,891.20x = 597,976,315.20 × 204,529,257.60
  4. Step 4: Simplify right side
    398,587,891.20x = 122,303,651,810,239,600
  5. Step 5: Solve for x
    x = 122,303,651,810,239,600/398,587,891.20
  6. Step 6: Final answer
    x = 306,842,366.54

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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.