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Finding the Fourth Proportional to 864,157.77, 1,296,298.94 and 331,678.80

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Solution

The fourth proportional to 864,157.77, 1,296,298.94 and 331,678.80 is: 497,542.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,157.77 : 1,296,298.94 = 331,678.80 : x
  2. Step 2: Convert to fraction form
    864,157.77/1,296,298.94 = 331,678.80/x
  3. Step 3: Cross multiply
    864,157.77x = 1,296,298.94 × 331,678.80
  4. Step 4: Simplify right side
    864,157.77x = 429,954,883,244.18
  5. Step 5: Solve for x
    x = 429,954,883,244.18/864,157.77
  6. Step 6: Final answer
    x = 497,542.11

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