Home / 515,664.25-711,603.03-286,220.92

Finding the Fourth Proportional to 515,664.25, 711,603.03 and 286,220.92

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Solution

The fourth proportional to 515,664.25, 711,603.03 and 286,220.92 is: 394,977.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,664.25 : 711,603.03 = 286,220.92 : x
  2. Step 2: Convert to fraction form
    515,664.25/711,603.03 = 286,220.92/x
  3. Step 3: Cross multiply
    515,664.25x = 711,603.03 × 286,220.92
  4. Step 4: Simplify right side
    515,664.25x = 203,675,673,921.39
  5. Step 5: Solve for x
    x = 203,675,673,921.39/515,664.25
  6. Step 6: Final answer
    x = 394,977.30

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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.