Home / 7,121,406.47-9,827,550.69-3,858,221.37

Finding the Fourth Proportional to 7,121,406.47, 9,827,550.69 and 3,858,221.37

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Solution

The fourth proportional to 7,121,406.47, 9,827,550.69 and 3,858,221.37 is: 5,324,350.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121,406.47 : 9,827,550.69 = 3,858,221.37 : x
  2. Step 2: Convert to fraction form
    7,121,406.47/9,827,550.69 = 3,858,221.37/x
  3. Step 3: Cross multiply
    7,121,406.47x = 9,827,550.69 × 3,858,221.37
  4. Step 4: Simplify right side
    7,121,406.47x = 37,916,866,086,916.24
  5. Step 5: Solve for x
    x = 37,916,866,086,916.24/7,121,406.47
  6. Step 6: Final answer
    x = 5,324,350.78

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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.