Home / 721,284.14-995,285.38-415,459.98

Finding the Fourth Proportional to 721,284.14, 995,285.38 and 415,459.98

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Solution

The fourth proportional to 721,284.14, 995,285.38 and 415,459.98 is: 573,284.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,284.14 : 995,285.38 = 415,459.98 : x
  2. Step 2: Convert to fraction form
    721,284.14/995,285.38 = 415,459.98/x
  3. Step 3: Cross multiply
    721,284.14x = 995,285.38 × 415,459.98
  4. Step 4: Simplify right side
    721,284.14x = 413,501,244,069.09
  5. Step 5: Solve for x
    x = 413,501,244,069.09/721,284.14
  6. Step 6: Final answer
    x = 573,284.81

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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.