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Finding the Fourth Proportional to 721,068.48, 995,049.44 and 415,134.72

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Solution

The fourth proportional to 721,068.48, 995,049.44 and 415,134.72 is: 572,871.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,068.48 : 995,049.44 = 415,134.72 : x
  2. Step 2: Convert to fraction form
    721,068.48/995,049.44 = 415,134.72/x
  3. Step 3: Cross multiply
    721,068.48x = 995,049.44 × 415,134.72
  4. Step 4: Simplify right side
    721,068.48x = 413,079,570,660.56
  5. Step 5: Solve for x
    x = 413,079,570,660.56/721,068.48
  6. Step 6: Final answer
    x = 572,871.48

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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.