Home / 515,390.19-711,214.37-285,945.03

Finding the Fourth Proportional to 515,390.19, 711,214.37 and 285,945.03

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Solution

The fourth proportional to 515,390.19, 711,214.37 and 285,945.03 is: 394,590.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,390.19 : 711,214.37 = 285,945.03 : x
  2. Step 2: Convert to fraction form
    515,390.19/711,214.37 = 285,945.03/x
  3. Step 3: Cross multiply
    515,390.19x = 711,214.37 × 285,945.03
  4. Step 4: Simplify right side
    515,390.19x = 203,368,212,936.36
  5. Step 5: Solve for x
    x = 203,368,212,936.36/515,390.19
  6. Step 6: Final answer
    x = 394,590.77

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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.