Home / 981,478.68-1,472,218.38-307,612.28

Finding the Fourth Proportional to 981,478.68, 1,472,218.38 and 307,612.28

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Solution

The fourth proportional to 981,478.68, 1,472,218.38 and 307,612.28 is: 461,418.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,478.68 : 1,472,218.38 = 307,612.28 : x
  2. Step 2: Convert to fraction form
    981,478.68/1,472,218.38 = 307,612.28/x
  3. Step 3: Cross multiply
    981,478.68x = 1,472,218.38 × 307,612.28
  4. Step 4: Simplify right side
    981,478.68x = 452,872,452,529.71
  5. Step 5: Solve for x
    x = 452,872,452,529.71/981,478.68
  6. Step 6: Final answer
    x = 461,418.53

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Double scale
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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.