Home / 498,310.98-687,705.66-283,520.04

Finding the Fourth Proportional to 498,310.98, 687,705.66 and 283,520.04

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Solution

The fourth proportional to 498,310.98, 687,705.66 and 283,520.04 is: 391,278.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,310.98 : 687,705.66 = 283,520.04 : x
  2. Step 2: Convert to fraction form
    498,310.98/687,705.66 = 283,520.04/x
  3. Step 3: Cross multiply
    498,310.98x = 687,705.66 × 283,520.04
  4. Step 4: Simplify right side
    498,310.98x = 194,978,336,231.43
  5. Step 5: Solve for x
    x = 194,978,336,231.43/498,310.98
  6. Step 6: Final answer
    x = 391,278.43

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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.