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Finding the Fourth Proportional to 579,487.70, 869,231.55 and 402,340.70

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Solution

The fourth proportional to 579,487.70, 869,231.55 and 402,340.70 is: 603,511.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,487.70 : 869,231.55 = 402,340.70 : x
  2. Step 2: Convert to fraction form
    579,487.70/869,231.55 = 402,340.70/x
  3. Step 3: Cross multiply
    579,487.70x = 869,231.55 × 402,340.70
  4. Step 4: Simplify right side
    579,487.70x = 349,727,230,289.09
  5. Step 5: Solve for x
    x = 349,727,230,289.09/579,487.70
  6. Step 6: Final answer
    x = 603,511.05

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