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Finding the Fourth Proportional to 876,846.80, 1,314,881.40 and 403,288.40

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Solution

The fourth proportional to 876,846.80, 1,314,881.40 and 403,288.40 is: 604,753.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,846.80 : 1,314,881.40 = 403,288.40 : x
  2. Step 2: Convert to fraction form
    876,846.80/1,314,881.40 = 403,288.40/x
  3. Step 3: Cross multiply
    876,846.80x = 1,314,881.40 × 403,288.40
  4. Step 4: Simplify right side
    876,846.80x = 530,276,415,995.76
  5. Step 5: Solve for x
    x = 530,276,415,995.76/876,846.80
  6. Step 6: Final answer
    x = 604,753.78

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