Home / 515,249.25-711,055.37-285,799.07

Finding the Fourth Proportional to 515,249.25, 711,055.37 and 285,799.07

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Solution

The fourth proportional to 515,249.25, 711,055.37 and 285,799.07 is: 394,409.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,249.25 : 711,055.37 = 285,799.07 : x
  2. Step 2: Convert to fraction form
    515,249.25/711,055.37 = 285,799.07/x
  3. Step 3: Cross multiply
    515,249.25x = 711,055.37 × 285,799.07
  4. Step 4: Simplify right side
    515,249.25x = 203,218,960,972.37
  5. Step 5: Solve for x
    x = 203,218,960,972.37/515,249.25
  6. Step 6: Final answer
    x = 394,409.04

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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.