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Finding the Fourth Proportional to 663,322.66, 915,270.51 and 391,370.02

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Solution

The fourth proportional to 663,322.66, 915,270.51 and 391,370.02 is: 540,022.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,322.66 : 915,270.51 = 391,370.02 : x
  2. Step 2: Convert to fraction form
    663,322.66/915,270.51 = 391,370.02/x
  3. Step 3: Cross multiply
    663,322.66x = 915,270.51 × 391,370.02
  4. Step 4: Simplify right side
    663,322.66x = 358,209,437,804.11
  5. Step 5: Solve for x
    x = 358,209,437,804.11/663,322.66
  6. Step 6: Final answer
    x = 540,022.92

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