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Finding the Fourth Proportional to 407,576.80, 611,365.20 and 257,329.90

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Solution

The fourth proportional to 407,576.80, 611,365.20 and 257,329.90 is: 385,994.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,576.80 : 611,365.20 = 257,329.90 : x
  2. Step 2: Convert to fraction form
    407,576.80/611,365.20 = 257,329.90/x
  3. Step 3: Cross multiply
    407,576.80x = 611,365.20 × 257,329.90
  4. Step 4: Simplify right side
    407,576.80x = 157,322,545,779.48
  5. Step 5: Solve for x
    x = 157,322,545,779.48/407,576.80
  6. Step 6: Final answer
    x = 385,994.85

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