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Finding the Fourth Proportional to 721,576.96, 995,881.34 and 415,593.78

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Solution

The fourth proportional to 721,576.96, 995,881.34 and 415,593.78 is: 573,579.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,576.96 : 995,881.34 = 415,593.78 : x
  2. Step 2: Convert to fraction form
    721,576.96/995,881.34 = 415,593.78/x
  3. Step 3: Cross multiply
    721,576.96x = 995,881.34 × 415,593.78
  4. Step 4: Simplify right side
    721,576.96x = 413,882,090,522.07
  5. Step 5: Solve for x
    x = 413,882,090,522.07/721,576.96
  6. Step 6: Final answer
    x = 573,579.97

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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.