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Finding the Fourth Proportional to 394,404.35, 591,606.52 and 360,189.95

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Solution

The fourth proportional to 394,404.35, 591,606.52 and 360,189.95 is: 540,284.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,404.35 : 591,606.52 = 360,189.95 : x
  2. Step 2: Convert to fraction form
    394,404.35/591,606.52 = 360,189.95/x
  3. Step 3: Cross multiply
    394,404.35x = 591,606.52 × 360,189.95
  4. Step 4: Simplify right side
    394,404.35x = 213,090,718,999.97
  5. Step 5: Solve for x
    x = 213,090,718,999.97/394,404.35
  6. Step 6: Final answer
    x = 540,284.92

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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.