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Finding the Fourth Proportional to 3,982,274.28, 5,973,400.08 and 990,458.28

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Solution

The fourth proportional to 3,982,274.28, 5,973,400.08 and 990,458.28 is: 1,485,684.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982,274.28 : 5,973,400.08 = 990,458.28 : x
  2. Step 2: Convert to fraction form
    3,982,274.28/5,973,400.08 = 990,458.28/x
  3. Step 3: Cross multiply
    3,982,274.28x = 5,973,400.08 × 990,458.28
  4. Step 4: Simplify right side
    3,982,274.28x = 5,916,403,568,988.66
  5. Step 5: Solve for x
    x = 5,916,403,568,988.66/3,982,274.28
  6. Step 6: Final answer
    x = 1,485,684.60

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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.