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Finding the Fourth Proportional to 5,322,758.36, 7,984,137.69 and 1,679,857.43

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Solution

The fourth proportional to 5,322,758.36, 7,984,137.69 and 1,679,857.43 is: 2,519,786.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,322,758.36 : 7,984,137.69 = 1,679,857.43 : x
  2. Step 2: Convert to fraction form
    5,322,758.36/7,984,137.69 = 1,679,857.43/x
  3. Step 3: Cross multiply
    5,322,758.36x = 7,984,137.69 × 1,679,857.43
  4. Step 4: Simplify right side
    5,322,758.36x = 13,412,212,980,768.85
  5. Step 5: Solve for x
    x = 13,412,212,980,768.85/5,322,758.36
  6. Step 6: Final answer
    x = 2,519,786.19

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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.