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Finding the Fourth Proportional to 518,681.40, 715,752.68 and 289,262.24

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Solution

The fourth proportional to 518,681.40, 715,752.68 and 289,262.24 is: 399,166.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,681.40 : 715,752.68 = 289,262.24 : x
  2. Step 2: Convert to fraction form
    518,681.40/715,752.68 = 289,262.24/x
  3. Step 3: Cross multiply
    518,681.40x = 715,752.68 × 289,262.24
  4. Step 4: Simplify right side
    518,681.40x = 207,040,223,502.80
  5. Step 5: Solve for x
    x = 207,040,223,502.80/518,681.40
  6. Step 6: Final answer
    x = 399,166.47

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