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Finding the Fourth Proportional to 776,668.68, 1,165,135.86 and 355,980.60

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Solution

The fourth proportional to 776,668.68, 1,165,135.86 and 355,980.60 is: 534,031.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,668.68 : 1,165,135.86 = 355,980.60 : x
  2. Step 2: Convert to fraction form
    776,668.68/1,165,135.86 = 355,980.60/x
  3. Step 3: Cross multiply
    776,668.68x = 1,165,135.86 × 355,980.60
  4. Step 4: Simplify right side
    776,668.68x = 414,765,762,524.32
  5. Step 5: Solve for x
    x = 414,765,762,524.32/776,668.68
  6. Step 6: Final answer
    x = 534,031.79

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