Home / 488,449.10-731,636.85-405,505.10

Finding the Fourth Proportional to 488,449.10, 731,636.85 and 405,505.10

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Solution

The fourth proportional to 488,449.10, 731,636.85 and 405,505.10 is: 607,396.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,449.10 : 731,636.85 = 405,505.10 : x
  2. Step 2: Convert to fraction form
    488,449.10/731,636.85 = 405,505.10/x
  3. Step 3: Cross multiply
    488,449.10x = 731,636.85 × 405,505.10
  4. Step 4: Simplify right side
    488,449.10x = 296,682,474,022.94
  5. Step 5: Solve for x
    x = 296,682,474,022.94/488,449.10
  6. Step 6: Final answer
    x = 607,396.91

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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.