Home / 515,325.11-711,149.48-285,882.39

Finding the Fourth Proportional to 515,325.11, 711,149.48 and 285,882.39

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Solution

The fourth proportional to 515,325.11, 711,149.48 and 285,882.39 is: 394,518.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,325.11 : 711,149.48 = 285,882.39 : x
  2. Step 2: Convert to fraction form
    515,325.11/711,149.48 = 285,882.39/x
  3. Step 3: Cross multiply
    515,325.11x = 711,149.48 × 285,882.39
  4. Step 4: Simplify right side
    515,325.11x = 203,305,112,989.66
  5. Step 5: Solve for x
    x = 203,305,112,989.66/515,325.11
  6. Step 6: Final answer
    x = 394,518.16

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1.5x scale

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.