Home / 7,770,939.60-11,651,743.80-3,991,803.60

Finding the Fourth Proportional to 7,770,939.60, 11,651,743.80 and 3,991,803.60

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Solution

The fourth proportional to 7,770,939.60, 11,651,743.80 and 3,991,803.60 is: 5,985,308.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,770,939.60 : 11,651,743.80 = 3,991,803.60 : x
  2. Step 2: Convert to fraction form
    7,770,939.60/11,651,743.80 = 3,991,803.60/x
  3. Step 3: Cross multiply
    7,770,939.60x = 11,651,743.80 × 3,991,803.60
  4. Step 4: Simplify right side
    7,770,939.60x = 46,511,472,847,117.69
  5. Step 5: Solve for x
    x = 46,511,472,847,117.69/7,770,939.60
  6. Step 6: Final answer
    x = 5,985,308.76

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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.