Home / 861,290.22-1,188,571.83-479,310.54

Finding the Fourth Proportional to 861,290.22, 1,188,571.83 and 479,310.54

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Solution

The fourth proportional to 861,290.22, 1,188,571.83 and 479,310.54 is: 661,443.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,290.22 : 1,188,571.83 = 479,310.54 : x
  2. Step 2: Convert to fraction form
    861,290.22/1,188,571.83 = 479,310.54/x
  3. Step 3: Cross multiply
    861,290.22x = 1,188,571.83 × 479,310.54
  4. Step 4: Simplify right side
    861,290.22x = 569,695,005,666.09
  5. Step 5: Solve for x
    x = 569,695,005,666.09/861,290.22
  6. Step 6: Final answer
    x = 661,443.72

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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.