Home / 7,107,998.18-10,661,996.88-1,991,185.65

Finding the Fourth Proportional to 7,107,998.18, 10,661,996.88 and 1,991,185.65

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Solution

The fourth proportional to 7,107,998.18, 10,661,996.88 and 1,991,185.65 is: 2,986,778.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,107,998.18 : 10,661,996.88 = 1,991,185.65 : x
  2. Step 2: Convert to fraction form
    7,107,998.18/10,661,996.88 = 1,991,185.65/x
  3. Step 3: Cross multiply
    7,107,998.18x = 10,661,996.88 × 1,991,185.65
  4. Step 4: Simplify right side
    7,107,998.18x = 21,230,015,187,800.77
  5. Step 5: Solve for x
    x = 21,230,015,187,800.77/7,107,998.18
  6. Step 6: Final answer
    x = 2,986,778.37

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Double scale
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Similar ratio
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1.5x scale

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.