Home / 721,069.48-995,050.82-415,135.72

Finding the Fourth Proportional to 721,069.48, 995,050.82 and 415,135.72

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Solution

The fourth proportional to 721,069.48, 995,050.82 and 415,135.72 is: 572,872.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,069.48 : 995,050.82 = 415,135.72 : x
  2. Step 2: Convert to fraction form
    721,069.48/995,050.82 = 415,135.72/x
  3. Step 3: Cross multiply
    721,069.48x = 995,050.82 × 415,135.72
  4. Step 4: Simplify right side
    721,069.48x = 413,081,138,597.29
  5. Step 5: Solve for x
    x = 413,081,138,597.29/721,069.48
  6. Step 6: Final answer
    x = 572,872.86

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Double scale
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Similar ratio
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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.