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Finding the Fourth Proportional to 442,811.80, 663,233.55 and 342,647.20

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Solution

The fourth proportional to 442,811.80, 663,233.55 and 342,647.20 is: 513,209.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,811.80 : 663,233.55 = 342,647.20 : x
  2. Step 2: Convert to fraction form
    442,811.80/663,233.55 = 342,647.20/x
  3. Step 3: Cross multiply
    442,811.80x = 663,233.55 × 342,647.20
  4. Step 4: Simplify right side
    442,811.80x = 227,255,118,853.56
  5. Step 5: Solve for x
    x = 227,255,118,853.56/442,811.80
  6. Step 6: Final answer
    x = 513,209.27

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