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Finding the Fourth Proportional to 6,479,773.88, 9,721,235.45 and 1,992,049.88

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Solution

The fourth proportional to 6,479,773.88, 9,721,235.45 and 1,992,049.88 is: 2,988,558.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,479,773.88 : 9,721,235.45 = 1,992,049.88 : x
  2. Step 2: Convert to fraction form
    6,479,773.88/9,721,235.45 = 1,992,049.88/x
  3. Step 3: Cross multiply
    6,479,773.88x = 9,721,235.45 × 1,992,049.88
  4. Step 4: Simplify right side
    6,479,773.88x = 19,365,185,867,998.20
  5. Step 5: Solve for x
    x = 19,365,185,867,998.20/6,479,773.88
  6. Step 6: Final answer
    x = 2,988,558.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.