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Finding the Fourth Proportional to 3,978,352.64, 5,967,570.54 and 3,184,679.36

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Solution

The fourth proportional to 3,978,352.64, 5,967,570.54 and 3,184,679.36 is: 4,777,052.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,978,352.64 : 5,967,570.54 = 3,184,679.36 : x
  2. Step 2: Convert to fraction form
    3,978,352.64/5,967,570.54 = 3,184,679.36/x
  3. Step 3: Cross multiply
    3,978,352.64x = 5,967,570.54 × 3,184,679.36
  4. Step 4: Simplify right side
    3,978,352.64x = 19,004,798,728,082.05
  5. Step 5: Solve for x
    x = 19,004,798,728,082.05/3,978,352.64
  6. Step 6: Final answer
    x = 4,777,052.32

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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.