Home / 3,121,816.80-4,682,854.80-991,840.80

Finding the Fourth Proportional to 3,121,816.80, 4,682,854.80 and 991,840.80

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Solution

The fourth proportional to 3,121,816.80, 4,682,854.80 and 991,840.80 is: 1,487,802.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121,816.80 : 4,682,854.80 = 991,840.80 : x
  2. Step 2: Convert to fraction form
    3,121,816.80/4,682,854.80 = 991,840.80/x
  3. Step 3: Cross multiply
    3,121,816.80x = 4,682,854.80 × 991,840.80
  4. Step 4: Simplify right side
    3,121,816.80x = 4,644,646,451,115.84
  5. Step 5: Solve for x
    x = 4,644,646,451,115.84/3,121,816.80
  6. Step 6: Final answer
    x = 1,487,802.38

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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.