Home / 711,542.40-981,951.75-405,613.19

Finding the Fourth Proportional to 711,542.40, 981,951.75 and 405,613.19

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Solution

The fourth proportional to 711,542.40, 981,951.75 and 405,613.19 is: 559,759.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,542.40 : 981,951.75 = 405,613.19 : x
  2. Step 2: Convert to fraction form
    711,542.40/981,951.75 = 405,613.19/x
  3. Step 3: Cross multiply
    711,542.40x = 981,951.75 × 405,613.19
  4. Step 4: Simplify right side
    711,542.40x = 398,292,576,833.82
  5. Step 5: Solve for x
    x = 398,292,576,833.82/711,542.40
  6. Step 6: Final answer
    x = 559,759.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.