Home / 721,364.39-995,396.32-415,540.79

Finding the Fourth Proportional to 721,364.39, 995,396.32 and 415,540.79

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Solution

The fourth proportional to 721,364.39, 995,396.32 and 415,540.79 is: 573,396.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,364.39 : 995,396.32 = 415,540.79 : x
  2. Step 2: Convert to fraction form
    721,364.39/995,396.32 = 415,540.79/x
  3. Step 3: Cross multiply
    721,364.39x = 995,396.32 × 415,540.79
  4. Step 4: Simplify right side
    721,364.39x = 413,627,774,625.53
  5. Step 5: Solve for x
    x = 413,627,774,625.53/721,364.39
  6. Step 6: Final answer
    x = 573,396.44

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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.