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Finding the Fourth Proportional to 404,583.80, 606,195.30 and 320,019.80

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Solution

The fourth proportional to 404,583.80, 606,195.30 and 320,019.80 is: 479,491.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,583.80 : 606,195.30 = 320,019.80 : x
  2. Step 2: Convert to fraction form
    404,583.80/606,195.30 = 320,019.80/x
  3. Step 3: Cross multiply
    404,583.80x = 606,195.30 × 320,019.80
  4. Step 4: Simplify right side
    404,583.80x = 193,994,498,666.94
  5. Step 5: Solve for x
    x = 193,994,498,666.94/404,583.80
  6. Step 6: Final answer
    x = 479,491.51

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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.