Home / 385,647.20-579,853.20-324,821.60

Finding the Fourth Proportional to 385,647.20, 579,853.20 and 324,821.60

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Solution

The fourth proportional to 385,647.20, 579,853.20 and 324,821.60 is: 488,396.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,647.20 : 579,853.20 = 324,821.60 : x
  2. Step 2: Convert to fraction form
    385,647.20/579,853.20 = 324,821.60/x
  3. Step 3: Cross multiply
    385,647.20x = 579,853.20 × 324,821.60
  4. Step 4: Simplify right side
    385,647.20x = 188,348,844,189.12
  5. Step 5: Solve for x
    x = 188,348,844,189.12/385,647.20
  6. Step 6: Final answer
    x = 488,396.76

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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.