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Finding the Fourth Proportional to 721,742.69, 995,893.92 and 415,759.29

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Solution

The fourth proportional to 721,742.69, 995,893.92 and 415,759.29 is: 573,683.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,742.69 : 995,893.92 = 415,759.29 : x
  2. Step 2: Convert to fraction form
    721,742.69/995,893.92 = 415,759.29/x
  3. Step 3: Cross multiply
    721,742.69x = 995,893.92 × 415,759.29
  4. Step 4: Simplify right side
    721,742.69x = 414,052,149,094.52
  5. Step 5: Solve for x
    x = 414,052,149,094.52/721,742.69
  6. Step 6: Final answer
    x = 573,683.89

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1.5x scale

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.