Home / 981,155.10-1,471,448.32-381,982.70

Finding the Fourth Proportional to 981,155.10, 1,471,448.32 and 381,982.70

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Solution

The fourth proportional to 981,155.10, 1,471,448.32 and 381,982.70 is: 572,863.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,155.10 : 1,471,448.32 = 381,982.70 : x
  2. Step 2: Convert to fraction form
    981,155.10/1,471,448.32 = 381,982.70/x
  3. Step 3: Cross multiply
    981,155.10x = 1,471,448.32 × 381,982.70
  4. Step 4: Simplify right side
    981,155.10x = 562,067,802,184.06
  5. Step 5: Solve for x
    x = 562,067,802,184.06/981,155.10
  6. Step 6: Final answer
    x = 572,863.35

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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.