Home / 3,920,339.76-5,410,132.74-2,178,121.56

Finding the Fourth Proportional to 3,920,339.76, 5,410,132.74 and 2,178,121.56

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Solution

The fourth proportional to 3,920,339.76, 5,410,132.74 and 2,178,121.56 is: 3,005,843.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920,339.76 : 5,410,132.74 = 2,178,121.56 : x
  2. Step 2: Convert to fraction form
    3,920,339.76/5,410,132.74 = 2,178,121.56/x
  3. Step 3: Cross multiply
    3,920,339.76x = 5,410,132.74 × 2,178,121.56
  4. Step 4: Simplify right side
    3,920,339.76x = 11,783,926,763,455.88
  5. Step 5: Solve for x
    x = 11,783,926,763,455.88/3,920,339.76
  6. Step 6: Final answer
    x = 3,005,843.24

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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.