Home / 981,606.20-1,472,409.30-664,345.40

Finding the Fourth Proportional to 981,606.20, 1,472,409.30 and 664,345.40

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Solution

The fourth proportional to 981,606.20, 1,472,409.30 and 664,345.40 is: 996,518.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,606.20 : 1,472,409.30 = 664,345.40 : x
  2. Step 2: Convert to fraction form
    981,606.20/1,472,409.30 = 664,345.40/x
  3. Step 3: Cross multiply
    981,606.20x = 1,472,409.30 × 664,345.40
  4. Step 4: Simplify right side
    981,606.20x = 978,188,345,372.22
  5. Step 5: Solve for x
    x = 978,188,345,372.22/981,606.20
  6. Step 6: Final answer
    x = 996,518.10

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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.