Home / 2,290,831.50-3,161,446.80-1,311,078.07

Finding the Fourth Proportional to 2,290,831.50, 3,161,446.80 and 1,311,078.07

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Solution

The fourth proportional to 2,290,831.50, 3,161,446.80 and 1,311,078.07 is: 1,809,344.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290,831.50 : 3,161,446.80 = 1,311,078.07 : x
  2. Step 2: Convert to fraction form
    2,290,831.50/3,161,446.80 = 1,311,078.07/x
  3. Step 3: Cross multiply
    2,290,831.50x = 3,161,446.80 × 1,311,078.07
  4. Step 4: Simplify right side
    2,290,831.50x = 4,144,903,568,951.68
  5. Step 5: Solve for x
    x = 4,144,903,568,951.68/2,290,831.50
  6. Step 6: Final answer
    x = 1,809,344.58

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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.