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Finding the Fourth Proportional to 7,998,363.86, 11,998,789.95 and 2,605,758.89

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Solution

The fourth proportional to 7,998,363.86, 11,998,789.95 and 2,605,758.89 is: 3,909,043.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998,363.86 : 11,998,789.95 = 2,605,758.89 : x
  2. Step 2: Convert to fraction form
    7,998,363.86/11,998,789.95 = 2,605,758.89/x
  3. Step 3: Cross multiply
    7,998,363.86x = 11,998,789.95 × 2,605,758.89
  4. Step 4: Simplify right side
    7,998,363.86x = 31,265,953,581,455.16
  5. Step 5: Solve for x
    x = 31,265,953,581,455.16/7,998,363.86
  6. Step 6: Final answer
    x = 3,909,043.67

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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.