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Finding the Fourth Proportional to 721,453.91, 995,364.62 and 415,524.16

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Solution

The fourth proportional to 721,453.91, 995,364.62 and 415,524.16 is: 573,284.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,453.91 : 995,364.62 = 415,524.16 : x
  2. Step 2: Convert to fraction form
    721,453.91/995,364.62 = 415,524.16/x
  3. Step 3: Cross multiply
    721,453.91x = 995,364.62 × 415,524.16
  4. Step 4: Simplify right side
    721,453.91x = 413,598,048,344.02
  5. Step 5: Solve for x
    x = 413,598,048,344.02/721,453.91
  6. Step 6: Final answer
    x = 573,284.09

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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.