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Finding the Fourth Proportional to 721,057.37, 994,758.48 and 415,060.53

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Solution

The fourth proportional to 721,057.37, 994,758.48 and 415,060.53 is: 572,610.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,057.37 : 994,758.48 = 415,060.53 : x
  2. Step 2: Convert to fraction form
    721,057.37/994,758.48 = 415,060.53/x
  3. Step 3: Cross multiply
    721,057.37x = 994,758.48 × 415,060.53
  4. Step 4: Simplify right side
    721,057.37x = 412,884,981,930.79
  5. Step 5: Solve for x
    x = 412,884,981,930.79/721,057.37
  6. Step 6: Final answer
    x = 572,610.45

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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.