Home / 809,800.20-1,215,436.43-431,037.77

Finding the Fourth Proportional to 809,800.20, 1,215,436.43 and 431,037.77

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Solution

The fourth proportional to 809,800.20, 1,215,436.43 and 431,037.77 is: 646,948.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,800.20 : 1,215,436.43 = 431,037.77 : x
  2. Step 2: Convert to fraction form
    809,800.20/1,215,436.43 = 431,037.77/x
  3. Step 3: Cross multiply
    809,800.20x = 1,215,436.43 × 431,037.77
  4. Step 4: Simplify right side
    809,800.20x = 523,899,003,364.37
  5. Step 5: Solve for x
    x = 523,899,003,364.37/809,800.20
  6. Step 6: Final answer
    x = 646,948.47

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