Home / 1,387,200.25-2,080,800.38-389,928.25

Finding the Fourth Proportional to 1,387,200.25, 2,080,800.38 and 389,928.25

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Solution

The fourth proportional to 1,387,200.25, 2,080,800.38 and 389,928.25 is: 584,892.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,200.25 : 2,080,800.38 = 389,928.25 : x
  2. Step 2: Convert to fraction form
    1,387,200.25/2,080,800.38 = 389,928.25/x
  3. Step 3: Cross multiply
    1,387,200.25x = 2,080,800.38 × 389,928.25
  4. Step 4: Simplify right side
    1,387,200.25x = 811,362,850,772.74
  5. Step 5: Solve for x
    x = 811,362,850,772.74/1,387,200.25
  6. Step 6: Final answer
    x = 584,892.38

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