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Finding the Fourth Proportional to 639,866.10, 882,939.96 and 353,369.10

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Solution

The fourth proportional to 639,866.10, 882,939.96 and 353,369.10 is: 487,607.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,866.10 : 882,939.96 = 353,369.10 : x
  2. Step 2: Convert to fraction form
    639,866.10/882,939.96 = 353,369.10/x
  3. Step 3: Cross multiply
    639,866.10x = 882,939.96 × 353,369.10
  4. Step 4: Simplify right side
    639,866.10x = 312,003,699,019.24
  5. Step 5: Solve for x
    x = 312,003,699,019.24/639,866.10
  6. Step 6: Final answer
    x = 487,607.80

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