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Finding the Fourth Proportional to 664,334.10, 995,887.86 and 264,878.28

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Solution

The fourth proportional to 664,334.10, 995,887.86 and 264,878.28 is: 397,072.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,334.10 : 995,887.86 = 264,878.28 : x
  2. Step 2: Convert to fraction form
    664,334.10/995,887.86 = 264,878.28/x
  3. Step 3: Cross multiply
    664,334.10x = 995,887.86 × 264,878.28
  4. Step 4: Simplify right side
    664,334.10x = 263,789,063,429.68
  5. Step 5: Solve for x
    x = 263,789,063,429.68/664,334.10
  6. Step 6: Final answer
    x = 397,072.89

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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.