Home / 654,020.70-981,657.45-338,703.90

Finding the Fourth Proportional to 654,020.70, 981,657.45 and 338,703.90

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Solution

The fourth proportional to 654,020.70, 981,657.45 and 338,703.90 is: 508,380.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,020.70 : 981,657.45 = 338,703.90 : x
  2. Step 2: Convert to fraction form
    654,020.70/981,657.45 = 338,703.90/x
  3. Step 3: Cross multiply
    654,020.70x = 981,657.45 × 338,703.90
  4. Step 4: Simplify right side
    654,020.70x = 332,491,206,779.06
  5. Step 5: Solve for x
    x = 332,491,206,779.06/654,020.70
  6. Step 6: Final answer
    x = 508,380.25

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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.