Home / 1,388,076.62-1,915,550.87-807,439.05

Finding the Fourth Proportional to 1,388,076.62, 1,915,550.87 and 807,439.05

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Solution

The fourth proportional to 1,388,076.62, 1,915,550.87 and 807,439.05 is: 1,114,268.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,076.62 : 1,915,550.87 = 807,439.05 : x
  2. Step 2: Convert to fraction form
    1,388,076.62/1,915,550.87 = 807,439.05/x
  3. Step 3: Cross multiply
    1,388,076.62x = 1,915,550.87 × 807,439.05
  4. Step 4: Simplify right side
    1,388,076.62x = 1,546,690,570,662.28
  5. Step 5: Solve for x
    x = 1,546,690,570,662.28/1,388,076.62
  6. Step 6: Final answer
    x = 1,114,268.88

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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.