Home / 816,276.80-1,224,998.40-343,301.60

Finding the Fourth Proportional to 816,276.80, 1,224,998.40 and 343,301.60

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Solution

The fourth proportional to 816,276.80, 1,224,998.40 and 343,301.60 is: 515,197.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,276.80 : 1,224,998.40 = 343,301.60 : x
  2. Step 2: Convert to fraction form
    816,276.80/1,224,998.40 = 343,301.60/x
  3. Step 3: Cross multiply
    816,276.80x = 1,224,998.40 × 343,301.60
  4. Step 4: Simplify right side
    816,276.80x = 420,543,910,717.44
  5. Step 5: Solve for x
    x = 420,543,910,717.44/816,276.80
  6. Step 6: Final answer
    x = 515,197.68

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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.