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Finding the Fourth Proportional to 392,509.80, 588,764.70 and 353,143.80

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Solution

The fourth proportional to 392,509.80, 588,764.70 and 353,143.80 is: 529,715.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,509.80 : 588,764.70 = 353,143.80 : x
  2. Step 2: Convert to fraction form
    392,509.80/588,764.70 = 353,143.80/x
  3. Step 3: Cross multiply
    392,509.80x = 588,764.70 × 353,143.80
  4. Step 4: Simplify right side
    392,509.80x = 207,918,603,463.86
  5. Step 5: Solve for x
    x = 207,918,603,463.86/392,509.80
  6. Step 6: Final answer
    x = 529,715.70

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