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Finding the Fourth Proportional to 402,800.80, 603,682.80 and 308,840.80

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Solution

The fourth proportional to 402,800.80, 603,682.80 and 308,840.80 is: 462,863.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,800.80 : 603,682.80 = 308,840.80 : x
  2. Step 2: Convert to fraction form
    402,800.80/603,682.80 = 308,840.80/x
  3. Step 3: Cross multiply
    402,800.80x = 603,682.80 × 308,840.80
  4. Step 4: Simplify right side
    402,800.80x = 186,441,878,898.24
  5. Step 5: Solve for x
    x = 186,441,878,898.24/402,800.80
  6. Step 6: Final answer
    x = 462,863.73

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