Home / 981,479.94-1,472,217.68-307,612.59

Finding the Fourth Proportional to 981,479.94, 1,472,217.68 and 307,612.59

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Solution

The fourth proportional to 981,479.94, 1,472,217.68 and 307,612.59 is: 461,418.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,479.94 : 1,472,217.68 = 307,612.59 : x
  2. Step 2: Convert to fraction form
    981,479.94/1,472,217.68 = 307,612.59/x
  3. Step 3: Cross multiply
    981,479.94x = 1,472,217.68 × 307,612.59
  4. Step 4: Simplify right side
    981,479.94x = 452,872,687,106.49
  5. Step 5: Solve for x
    x = 452,872,687,106.49/981,479.94
  6. Step 6: Final answer
    x = 461,418.18

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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.