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Finding the Fourth Proportional to 587,179.56, 810,311.94 and 318,907.56

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Solution

The fourth proportional to 587,179.56, 810,311.94 and 318,907.56 is: 440,094.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,179.56 : 810,311.94 = 318,907.56 : x
  2. Step 2: Convert to fraction form
    587,179.56/810,311.94 = 318,907.56/x
  3. Step 3: Cross multiply
    587,179.56x = 810,311.94 × 318,907.56
  4. Step 4: Simplify right side
    587,179.56x = 258,414,603,624.27
  5. Step 5: Solve for x
    x = 258,414,603,624.27/587,179.56
  6. Step 6: Final answer
    x = 440,094.69

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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.