Home / 816,131.20-1,224,196.80-343,350.40

Finding the Fourth Proportional to 816,131.20, 1,224,196.80 and 343,350.40

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Solution

The fourth proportional to 816,131.20, 1,224,196.80 and 343,350.40 is: 515,025.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,131.20 : 1,224,196.80 = 343,350.40 : x
  2. Step 2: Convert to fraction form
    816,131.20/1,224,196.80 = 343,350.40/x
  3. Step 3: Cross multiply
    816,131.20x = 1,224,196.80 × 343,350.40
  4. Step 4: Simplify right side
    816,131.20x = 420,328,460,958.72
  5. Step 5: Solve for x
    x = 420,328,460,958.72/816,131.20
  6. Step 6: Final answer
    x = 515,025.60

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1.5x scale

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.