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Finding the Fourth Proportional to 718,134.60, 991,013.40 and 395,874.66

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Solution

The fourth proportional to 718,134.60, 991,013.40 and 395,874.66 is: 546,300.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,134.60 : 991,013.40 = 395,874.66 : x
  2. Step 2: Convert to fraction form
    718,134.60/991,013.40 = 395,874.66/x
  3. Step 3: Cross multiply
    718,134.60x = 991,013.40 × 395,874.66
  4. Step 4: Simplify right side
    718,134.60x = 392,317,092,780.44
  5. Step 5: Solve for x
    x = 392,317,092,780.44/718,134.60
  6. Step 6: Final answer
    x = 546,300.22

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