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Finding the Fourth Proportional to 981,478.44, 1,472,218 and 307,612.03

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Solution

The fourth proportional to 981,478.44, 1,472,218 and 307,612.03 is: 461,418.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,478.44 : 1,472,218 = 307,612.03 : x
  2. Step 2: Convert to fraction form
    981,478.44/1,472,218 = 307,612.03/x
  3. Step 3: Cross multiply
    981,478.44x = 1,472,218 × 307,612.03
  4. Step 4: Simplify right side
    981,478.44x = 452,871,967,582.54
  5. Step 5: Solve for x
    x = 452,871,967,582.54/981,478.44
  6. Step 6: Final answer
    x = 461,418.15

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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.