Home / 579,780.44-868,011.78-392,456.60

Finding the Fourth Proportional to 579,780.44, 868,011.78 and 392,456.60

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Solution

The fourth proportional to 579,780.44, 868,011.78 and 392,456.60 is: 587,561.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,780.44 : 868,011.78 = 392,456.60 : x
  2. Step 2: Convert to fraction form
    579,780.44/868,011.78 = 392,456.60/x
  3. Step 3: Cross multiply
    579,780.44x = 868,011.78 × 392,456.60
  4. Step 4: Simplify right side
    579,780.44x = 340,656,951,938.75
  5. Step 5: Solve for x
    x = 340,656,951,938.75/579,780.44
  6. Step 6: Final answer
    x = 587,561.99

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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.