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Finding the Fourth Proportional to 3,986,292.45, 5,979,459.20 and 994,476.45

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Solution

The fourth proportional to 3,986,292.45, 5,979,459.20 and 994,476.45 is: 1,491,719.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986,292.45 : 5,979,459.20 = 994,476.45 : x
  2. Step 2: Convert to fraction form
    3,986,292.45/5,979,459.20 = 994,476.45/x
  3. Step 3: Cross multiply
    3,986,292.45x = 5,979,459.20 × 994,476.45
  4. Step 4: Simplify right side
    3,986,292.45x = 5,946,431,353,163.46
  5. Step 5: Solve for x
    x = 5,946,431,353,163.46/3,986,292.45
  6. Step 6: Final answer
    x = 1,491,719.79

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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.