Home / 3,128,993.20-4,689,990.60-1,331,570.80

Finding the Fourth Proportional to 3,128,993.20, 4,689,990.60 and 1,331,570.80

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Solution

The fourth proportional to 3,128,993.20, 4,689,990.60 and 1,331,570.80 is: 1,995,867.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128,993.20 : 4,689,990.60 = 1,331,570.80 : x
  2. Step 2: Convert to fraction form
    3,128,993.20/4,689,990.60 = 1,331,570.80/x
  3. Step 3: Cross multiply
    3,128,993.20x = 4,689,990.60 × 1,331,570.80
  4. Step 4: Simplify right side
    3,128,993.20x = 6,245,054,535,234.48
  5. Step 5: Solve for x
    x = 6,245,054,535,234.48/3,128,993.20
  6. Step 6: Final answer
    x = 1,995,867.08

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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.