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Finding the Fourth Proportional to 549,272.07, 821,633.22 and 515,679.75

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Solution

The fourth proportional to 549,272.07, 821,633.22 and 515,679.75 is: 771,383.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,272.07 : 821,633.22 = 515,679.75 : x
  2. Step 2: Convert to fraction form
    549,272.07/821,633.22 = 515,679.75/x
  3. Step 3: Cross multiply
    549,272.07x = 821,633.22 × 515,679.75
  4. Step 4: Simplify right side
    549,272.07x = 423,699,613,481.30
  5. Step 5: Solve for x
    x = 423,699,613,481.30/549,272.07
  6. Step 6: Final answer
    x = 771,383.87

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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.