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Finding the Fourth Proportional to 487,642.70, 731,464.05 and 408,910.70

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Solution

The fourth proportional to 487,642.70, 731,464.05 and 408,910.70 is: 613,366.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,642.70 : 731,464.05 = 408,910.70 : x
  2. Step 2: Convert to fraction form
    487,642.70/731,464.05 = 408,910.70/x
  3. Step 3: Cross multiply
    487,642.70x = 731,464.05 × 408,910.70
  4. Step 4: Simplify right side
    487,642.70x = 299,103,476,710.34
  5. Step 5: Solve for x
    x = 299,103,476,710.34/487,642.70
  6. Step 6: Final answer
    x = 613,366.05

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