Home / 981,431.20-1,472,195.40-509,039.20

Finding the Fourth Proportional to 981,431.20, 1,472,195.40 and 509,039.20

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Solution

The fourth proportional to 981,431.20, 1,472,195.40 and 509,039.20 is: 763,584.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,431.20 : 1,472,195.40 = 509,039.20 : x
  2. Step 2: Convert to fraction form
    981,431.20/1,472,195.40 = 509,039.20/x
  3. Step 3: Cross multiply
    981,431.20x = 1,472,195.40 × 509,039.20
  4. Step 4: Simplify right side
    981,431.20x = 749,405,168,659.68
  5. Step 5: Solve for x
    x = 749,405,168,659.68/981,431.20
  6. Step 6: Final answer
    x = 763,584.01

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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.