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Finding the Fourth Proportional to 3,982,099.24, 5,973,172.86 and 990,283.56

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Solution

The fourth proportional to 3,982,099.24, 5,973,172.86 and 990,283.56 is: 1,485,431.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982,099.24 : 5,973,172.86 = 990,283.56 : x
  2. Step 2: Convert to fraction form
    3,982,099.24/5,973,172.86 = 990,283.56/x
  3. Step 3: Cross multiply
    3,982,099.24x = 5,973,172.86 × 990,283.56
  4. Step 4: Simplify right side
    3,982,099.24x = 5,915,134,884,296.18
  5. Step 5: Solve for x
    x = 5,915,134,884,296.18/3,982,099.24
  6. Step 6: Final answer
    x = 1,485,431.31

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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.