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Finding the Fourth Proportional to 499,881.96, 689,119.38 and 356,392.98

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Solution

The fourth proportional to 499,881.96, 689,119.38 and 356,392.98 is: 491,310.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,881.96 : 689,119.38 = 356,392.98 : x
  2. Step 2: Convert to fraction form
    499,881.96/689,119.38 = 356,392.98/x
  3. Step 3: Cross multiply
    499,881.96x = 689,119.38 × 356,392.98
  4. Step 4: Simplify right side
    499,881.96x = 245,597,309,413.95
  5. Step 5: Solve for x
    x = 245,597,309,413.95/499,881.96
  6. Step 6: Final answer
    x = 491,310.61

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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.