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Finding the Fourth Proportional to 691,760.58, 954,617.85 and 389,953.86

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Solution

The fourth proportional to 691,760.58, 954,617.85 and 389,953.86 is: 538,129.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,760.58 : 954,617.85 = 389,953.86 : x
  2. Step 2: Convert to fraction form
    691,760.58/954,617.85 = 389,953.86/x
  3. Step 3: Cross multiply
    691,760.58x = 954,617.85 × 389,953.86
  4. Step 4: Simplify right side
    691,760.58x = 372,256,915,432.40
  5. Step 5: Solve for x
    x = 372,256,915,432.40/691,760.58
  6. Step 6: Final answer
    x = 538,129.70

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