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Finding the Fourth Proportional to 7,998,362.86, 11,998,788.45 and 2,605,757.89

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Solution

The fourth proportional to 7,998,362.86, 11,998,788.45 and 2,605,757.89 is: 3,909,042.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998,362.86 : 11,998,788.45 = 2,605,757.89 : x
  2. Step 2: Convert to fraction form
    7,998,362.86/11,998,788.45 = 2,605,757.89/x
  3. Step 3: Cross multiply
    7,998,362.86x = 11,998,788.45 × 2,605,757.89
  4. Step 4: Simplify right side
    7,998,362.86x = 31,265,937,674,028.37
  5. Step 5: Solve for x
    x = 31,265,937,674,028.37/7,998,362.86
  6. Step 6: Final answer
    x = 3,909,042.17

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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.