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Finding the Fourth Proportional to 469,483.72, 647,827.98 and 278,459.80

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Solution

The fourth proportional to 469,483.72, 647,827.98 and 278,459.80 is: 384,239.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,483.72 : 647,827.98 = 278,459.80 : x
  2. Step 2: Convert to fraction form
    469,483.72/647,827.98 = 278,459.80/x
  3. Step 3: Cross multiply
    469,483.72x = 647,827.98 × 278,459.80
  4. Step 4: Simplify right side
    469,483.72x = 180,394,049,745.20
  5. Step 5: Solve for x
    x = 180,394,049,745.20/469,483.72
  6. Step 6: Final answer
    x = 384,239.20

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