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Finding the Fourth Proportional to 5,642,803.78, 8,449,836.81 and 3,717,879.16

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Solution

The fourth proportional to 5,642,803.78, 8,449,836.81 and 3,717,879.16 is: 5,567,351.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,642,803.78 : 8,449,836.81 = 3,717,879.16 : x
  2. Step 2: Convert to fraction form
    5,642,803.78/8,449,836.81 = 3,717,879.16/x
  3. Step 3: Cross multiply
    5,642,803.78x = 8,449,836.81 × 3,717,879.16
  4. Step 4: Simplify right side
    5,642,803.78x = 31,415,472,181,299.88
  5. Step 5: Solve for x
    x = 31,415,472,181,299.88/5,642,803.78
  6. Step 6: Final answer
    x = 5,567,351.51

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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.