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Finding the Fourth Proportional to 7,978,956.96, 11,003,486.40 and 6,352,732.56

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Solution

The fourth proportional to 7,978,956.96, 11,003,486.40 and 6,352,732.56 is: 8,760,820.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,978,956.96 : 11,003,486.40 = 6,352,732.56 : x
  2. Step 2: Convert to fraction form
    7,978,956.96/11,003,486.40 = 6,352,732.56/x
  3. Step 3: Cross multiply
    7,978,956.96x = 11,003,486.40 × 6,352,732.56
  4. Step 4: Simplify right side
    7,978,956.96x = 69,902,206,326,797.18
  5. Step 5: Solve for x
    x = 69,902,206,326,797.18/7,978,956.96
  6. Step 6: Final answer
    x = 8,760,820.08

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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.