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Finding the Fourth Proportional to 654,327.64, 981,491.60 and 205,048.40

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Solution

The fourth proportional to 654,327.64, 981,491.60 and 205,048.40 is: 307,572.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,327.64 : 981,491.60 = 205,048.40 : x
  2. Step 2: Convert to fraction form
    654,327.64/981,491.60 = 205,048.40/x
  3. Step 3: Cross multiply
    654,327.64x = 981,491.60 × 205,048.40
  4. Step 4: Simplify right side
    654,327.64x = 201,253,282,193.44
  5. Step 5: Solve for x
    x = 201,253,282,193.44/654,327.64
  6. Step 6: Final answer
    x = 307,572.64

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Double scale
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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.