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Finding the Fourth Proportional to 520,861.68, 718,745.67 and 482,778.72

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Solution

The fourth proportional to 520,861.68, 718,745.67 and 482,778.72 is: 666,194.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,861.68 : 718,745.67 = 482,778.72 : x
  2. Step 2: Convert to fraction form
    520,861.68/718,745.67 = 482,778.72/x
  3. Step 3: Cross multiply
    520,861.68x = 718,745.67 × 482,778.72
  4. Step 4: Simplify right side
    520,861.68x = 346,995,114,568.14
  5. Step 5: Solve for x
    x = 346,995,114,568.14/520,861.68
  6. Step 6: Final answer
    x = 666,194.36

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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.