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Finding the Fourth Proportional to 394,401.80, 591,602.70 and 347,745.80

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Solution

The fourth proportional to 394,401.80, 591,602.70 and 347,745.80 is: 521,618.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,401.80 : 591,602.70 = 347,745.80 : x
  2. Step 2: Convert to fraction form
    394,401.80/591,602.70 = 347,745.80/x
  3. Step 3: Cross multiply
    394,401.80x = 591,602.70 × 347,745.80
  4. Step 4: Simplify right side
    394,401.80x = 205,727,354,193.66
  5. Step 5: Solve for x
    x = 205,727,354,193.66/394,401.80
  6. Step 6: Final answer
    x = 521,618.70

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1.5x scale

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.