Home / 1,279,185.43-1,918,751.55-426,318.88

Finding the Fourth Proportional to 1,279,185.43, 1,918,751.55 and 426,318.88

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Solution

The fourth proportional to 1,279,185.43, 1,918,751.55 and 426,318.88 is: 639,469.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,185.43 : 1,918,751.55 = 426,318.88 : x
  2. Step 2: Convert to fraction form
    1,279,185.43/1,918,751.55 = 426,318.88/x
  3. Step 3: Cross multiply
    1,279,185.43x = 1,918,751.55 × 426,318.88
  4. Step 4: Simplify right side
    1,279,185.43x = 818,000,011,794.26
  5. Step 5: Solve for x
    x = 818,000,011,794.26/1,279,185.43
  6. Step 6: Final answer
    x = 639,469.46

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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.