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Finding the Fourth Proportional to 494,354.05, 682,213.95 and 290,413.56

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Solution

The fourth proportional to 494,354.05, 682,213.95 and 290,413.56 is: 400,773.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,354.05 : 682,213.95 = 290,413.56 : x
  2. Step 2: Convert to fraction form
    494,354.05/682,213.95 = 290,413.56/x
  3. Step 3: Cross multiply
    494,354.05x = 682,213.95 × 290,413.56
  4. Step 4: Simplify right side
    494,354.05x = 198,124,181,901.16
  5. Step 5: Solve for x
    x = 198,124,181,901.16/494,354.05
  6. Step 6: Final answer
    x = 400,773.86

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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.