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Finding the Fourth Proportional to 721,780.27, 996,103.01 and 415,851.09

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Solution

The fourth proportional to 721,780.27, 996,103.01 and 415,851.09 is: 573,901.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,780.27 : 996,103.01 = 415,851.09 : x
  2. Step 2: Convert to fraction form
    721,780.27/996,103.01 = 415,851.09/x
  3. Step 3: Cross multiply
    721,780.27x = 996,103.01 × 415,851.09
  4. Step 4: Simplify right side
    721,780.27x = 414,230,526,147.82
  5. Step 5: Solve for x
    x = 414,230,526,147.82/721,780.27
  6. Step 6: Final answer
    x = 573,901.15

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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.