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Finding the Fourth Proportional to 628,807.98, 867,498.63 and 387,017.58

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Solution

The fourth proportional to 628,807.98, 867,498.63 and 387,017.58 is: 533,926.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,807.98 : 867,498.63 = 387,017.58 : x
  2. Step 2: Convert to fraction form
    628,807.98/867,498.63 = 387,017.58/x
  3. Step 3: Cross multiply
    628,807.98x = 867,498.63 × 387,017.58
  4. Step 4: Simplify right side
    628,807.98x = 335,737,220,435.92
  5. Step 5: Solve for x
    x = 335,737,220,435.92/628,807.98
  6. Step 6: Final answer
    x = 533,926.46

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