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Finding the Fourth Proportional to 721,575.96, 995,879.96 and 415,592.79

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Solution

The fourth proportional to 721,575.96, 995,879.96 and 415,592.79 is: 573,578.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,575.96 : 995,879.96 = 415,592.79 : x
  2. Step 2: Convert to fraction form
    721,575.96/995,879.96 = 415,592.79/x
  3. Step 3: Cross multiply
    721,575.96x = 995,879.96 × 415,592.79
  4. Step 4: Simplify right side
    721,575.96x = 413,880,531,081.49
  5. Step 5: Solve for x
    x = 413,880,531,081.49/721,575.96
  6. Step 6: Final answer
    x = 573,578.60

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Double scale
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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.