Home / 890,774.53-1,336,019.64-259,540.72

Finding the Fourth Proportional to 890,774.53, 1,336,019.64 and 259,540.72

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Solution

The fourth proportional to 890,774.53, 1,336,019.64 and 259,540.72 is: 389,269.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,774.53 : 1,336,019.64 = 259,540.72 : x
  2. Step 2: Convert to fraction form
    890,774.53/1,336,019.64 = 259,540.72/x
  3. Step 3: Cross multiply
    890,774.53x = 1,336,019.64 × 259,540.72
  4. Step 4: Simplify right side
    890,774.53x = 346,751,499,299.74
  5. Step 5: Solve for x
    x = 346,751,499,299.74/890,774.53
  6. Step 6: Final answer
    x = 389,269.66

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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.