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Finding the Fourth Proportional to 388,661.20, 581,609.40 and 269,774.80

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Solution

The fourth proportional to 388,661.20, 581,609.40 and 269,774.80 is: 403,702.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,661.20 : 581,609.40 = 269,774.80 : x
  2. Step 2: Convert to fraction form
    388,661.20/581,609.40 = 269,774.80/x
  3. Step 3: Cross multiply
    388,661.20x = 581,609.40 × 269,774.80
  4. Step 4: Simplify right side
    388,661.20x = 156,903,559,563.12
  5. Step 5: Solve for x
    x = 156,903,559,563.12/388,661.20
  6. Step 6: Final answer
    x = 403,702.66

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