Home / 1,434,388.49-1,979,499.66-789,831.75

Finding the Fourth Proportional to 1,434,388.49, 1,979,499.66 and 789,831.75

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Solution

The fourth proportional to 1,434,388.49, 1,979,499.66 and 789,831.75 is: 1,089,991.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434,388.49 : 1,979,499.66 = 789,831.75 : x
  2. Step 2: Convert to fraction form
    1,434,388.49/1,979,499.66 = 789,831.75/x
  3. Step 3: Cross multiply
    1,434,388.49x = 1,979,499.66 × 789,831.75
  4. Step 4: Simplify right side
    1,434,388.49x = 1,563,471,680,582.20
  5. Step 5: Solve for x
    x = 1,563,471,680,582.20/1,434,388.49
  6. Step 6: Final answer
    x = 1,089,991.79

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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.