Home / 879,239.62-1,318,845.03-280,192.78

Finding the Fourth Proportional to 879,239.62, 1,318,845.03 and 280,192.78

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Solution

The fourth proportional to 879,239.62, 1,318,845.03 and 280,192.78 is: 420,284.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,239.62 : 1,318,845.03 = 280,192.78 : x
  2. Step 2: Convert to fraction form
    879,239.62/1,318,845.03 = 280,192.78/x
  3. Step 3: Cross multiply
    879,239.62x = 1,318,845.03 × 280,192.78
  4. Step 4: Simplify right side
    879,239.62x = 369,530,855,344.88
  5. Step 5: Solve for x
    x = 369,530,855,344.88/879,239.62
  6. Step 6: Final answer
    x = 420,284.58

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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.