Home / 1,279,188.44-1,918,756.04-426,321.88

Finding the Fourth Proportional to 1,279,188.44, 1,918,756.04 and 426,321.88

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Solution

The fourth proportional to 1,279,188.44, 1,918,756.04 and 426,321.88 is: 639,473.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,188.44 : 1,918,756.04 = 426,321.88 : x
  2. Step 2: Convert to fraction form
    1,279,188.44/1,918,756.04 = 426,321.88/x
  3. Step 3: Cross multiply
    1,279,188.44x = 1,918,756.04 × 426,321.88
  4. Step 4: Simplify right side
    1,279,188.44x = 818,007,682,234.16
  5. Step 5: Solve for x
    x = 818,007,682,234.16/1,279,188.44
  6. Step 6: Final answer
    x = 639,473.95

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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.