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Finding the Fourth Proportional to 587,178.56, 810,310.56 and 318,906.56

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Solution

The fourth proportional to 587,178.56, 810,310.56 and 318,906.56 is: 440,093.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,178.56 : 810,310.56 = 318,906.56 : x
  2. Step 2: Convert to fraction form
    587,178.56/810,310.56 = 318,906.56/x
  3. Step 3: Cross multiply
    587,178.56x = 810,310.56 × 318,906.56
  4. Step 4: Simplify right side
    587,178.56x = 258,413,353,221.27
  5. Step 5: Solve for x
    x = 258,413,353,221.27/587,178.56
  6. Step 6: Final answer
    x = 440,093.31

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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.