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Finding the Fourth Proportional to 663,322.41, 915,270.17 and 391,369.77

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Solution

The fourth proportional to 663,322.41, 915,270.17 and 391,369.77 is: 540,022.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,322.41 : 915,270.17 = 391,369.77 : x
  2. Step 2: Convert to fraction form
    663,322.41/915,270.17 = 391,369.77/x
  3. Step 3: Cross multiply
    663,322.41x = 915,270.17 × 391,369.77
  4. Step 4: Simplify right side
    663,322.41x = 358,209,073,963.91
  5. Step 5: Solve for x
    x = 358,209,073,963.91/663,322.41
  6. Step 6: Final answer
    x = 540,022.57

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