Home / 515,076.07-772,836.11-278,585.23

Finding the Fourth Proportional to 515,076.07, 772,836.11 and 278,585.23

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Solution

The fourth proportional to 515,076.07, 772,836.11 and 278,585.23 is: 417,997.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,076.07 : 772,836.11 = 278,585.23 : x
  2. Step 2: Convert to fraction form
    515,076.07/772,836.11 = 278,585.23/x
  3. Step 3: Cross multiply
    515,076.07x = 772,836.11 × 278,585.23
  4. Step 4: Simplify right side
    515,076.07x = 215,300,724,063.73
  5. Step 5: Solve for x
    x = 215,300,724,063.73/515,076.07
  6. Step 6: Final answer
    x = 417,997.92

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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.