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Finding the Fourth Proportional to 654,370.80, 981,556.20 and 300,076.80

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Solution

The fourth proportional to 654,370.80, 981,556.20 and 300,076.80 is: 450,115.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,370.80 : 981,556.20 = 300,076.80 : x
  2. Step 2: Convert to fraction form
    654,370.80/981,556.20 = 300,076.80/x
  3. Step 3: Cross multiply
    654,370.80x = 981,556.20 × 300,076.80
  4. Step 4: Simplify right side
    654,370.80x = 294,542,243,516.16
  5. Step 5: Solve for x
    x = 294,542,243,516.16/654,370.80
  6. Step 6: Final answer
    x = 450,115.20

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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.