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Finding the Fourth Proportional to 7,230,349.53, 9,978,065.99 and 3,967,163.40

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Solution

The fourth proportional to 7,230,349.53, 9,978,065.99 and 3,967,163.40 is: 5,474,786.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,230,349.53 : 9,978,065.99 = 3,967,163.40 : x
  2. Step 2: Convert to fraction form
    7,230,349.53/9,978,065.99 = 3,967,163.40/x
  3. Step 3: Cross multiply
    7,230,349.53x = 9,978,065.99 × 3,967,163.40
  4. Step 4: Simplify right side
    7,230,349.53x = 39,584,618,198,312.77
  5. Step 5: Solve for x
    x = 39,584,618,198,312.77/7,230,349.53
  6. Step 6: Final answer
    x = 5,474,786.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.