Home / 2,311,795.87-3,190,283.55-1,279,378.78

Finding the Fourth Proportional to 2,311,795.87, 3,190,283.55 and 1,279,378.78

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Solution

The fourth proportional to 2,311,795.87, 3,190,283.55 and 1,279,378.78 is: 1,765,545.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311,795.87 : 3,190,283.55 = 1,279,378.78 : x
  2. Step 2: Convert to fraction form
    2,311,795.87/3,190,283.55 = 1,279,378.78/x
  3. Step 3: Cross multiply
    2,311,795.87x = 3,190,283.55 × 1,279,378.78
  4. Step 4: Simplify right side
    2,311,795.87x = 4,081,581,053,704.76
  5. Step 5: Solve for x
    x = 4,081,581,053,704.76/2,311,795.87
  6. Step 6: Final answer
    x = 1,765,545.62

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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.