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Finding the Fourth Proportional to 678,347.76, 936,073.08 and 376,518

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Solution

The fourth proportional to 678,347.76, 936,073.08 and 376,518 is: 519,568.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,347.76 : 936,073.08 = 376,518 : x
  2. Step 2: Convert to fraction form
    678,347.76/936,073.08 = 376,518/x
  3. Step 3: Cross multiply
    678,347.76x = 936,073.08 × 376,518
  4. Step 4: Simplify right side
    678,347.76x = 352,448,363,935.44
  5. Step 5: Solve for x
    x = 352,448,363,935.44/678,347.76
  6. Step 6: Final answer
    x = 519,568.85

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