Home / 981,185.40-1,471,778.10-307,319.40

Finding the Fourth Proportional to 981,185.40, 1,471,778.10 and 307,319.40

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Solution

The fourth proportional to 981,185.40, 1,471,778.10 and 307,319.40 is: 460,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,185.40 : 1,471,778.10 = 307,319.40 : x
  2. Step 2: Convert to fraction form
    981,185.40/1,471,778.10 = 307,319.40/x
  3. Step 3: Cross multiply
    981,185.40x = 1,471,778.10 × 307,319.40
  4. Step 4: Simplify right side
    981,185.40x = 452,305,962,625.14
  5. Step 5: Solve for x
    x = 452,305,962,625.14/981,185.40
  6. Step 6: Final answer
    x = 460,979.10

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Half scale
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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.