Home / 488,455.10-731,645.85-405,511.10

Finding the Fourth Proportional to 488,455.10, 731,645.85 and 405,511.10

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Solution

The fourth proportional to 488,455.10, 731,645.85 and 405,511.10 is: 607,405.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,455.10 : 731,645.85 = 405,511.10 : x
  2. Step 2: Convert to fraction form
    488,455.10/731,645.85 = 405,511.10/x
  3. Step 3: Cross multiply
    488,455.10x = 731,645.85 × 405,511.10
  4. Step 4: Simplify right side
    488,455.10x = 296,690,513,443.94
  5. Step 5: Solve for x
    x = 296,690,513,443.94/488,455.10
  6. Step 6: Final answer
    x = 607,405.91

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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.