Home / 823,287.20-1,234,930.80-324,586.40

Finding the Fourth Proportional to 823,287.20, 1,234,930.80 and 324,586.40

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Solution

The fourth proportional to 823,287.20, 1,234,930.80 and 324,586.40 is: 486,879.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,287.20 : 1,234,930.80 = 324,586.40 : x
  2. Step 2: Convert to fraction form
    823,287.20/1,234,930.80 = 324,586.40/x
  3. Step 3: Cross multiply
    823,287.20x = 1,234,930.80 × 324,586.40
  4. Step 4: Simplify right side
    823,287.20x = 400,841,742,621.12
  5. Step 5: Solve for x
    x = 400,841,742,621.12/823,287.20
  6. Step 6: Final answer
    x = 486,879.60

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Similar ratio
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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.