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Finding the Fourth Proportional to 404,998.20, 607,497.30 and 399,093.30

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Solution

The fourth proportional to 404,998.20, 607,497.30 and 399,093.30 is: 598,639.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,998.20 : 607,497.30 = 399,093.30 : x
  2. Step 2: Convert to fraction form
    404,998.20/607,497.30 = 399,093.30/x
  3. Step 3: Cross multiply
    404,998.20x = 607,497.30 × 399,093.30
  4. Step 4: Simplify right side
    404,998.20x = 242,448,102,198.09
  5. Step 5: Solve for x
    x = 242,448,102,198.09/404,998.20
  6. Step 6: Final answer
    x = 598,639.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.