Home / 981,478.37-1,472,218.16-307,612.23

Finding the Fourth Proportional to 981,478.37, 1,472,218.16 and 307,612.23

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Solution

The fourth proportional to 981,478.37, 1,472,218.16 and 307,612.23 is: 461,418.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,478.37 : 1,472,218.16 = 307,612.23 : x
  2. Step 2: Convert to fraction form
    981,478.37/1,472,218.16 = 307,612.23/x
  3. Step 3: Cross multiply
    981,478.37x = 1,472,218.16 × 307,612.23
  4. Step 4: Simplify right side
    981,478.37x = 452,872,309,706.04
  5. Step 5: Solve for x
    x = 452,872,309,706.04/981,478.37
  6. Step 6: Final answer
    x = 461,418.54

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Half scale
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Double scale
Find fourth proportional to 981,479.37, 1,472,219.66 and 307,613.23
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.