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Finding the Fourth Proportional to 7,377,879.70, 11,066,819.55 and 5,213,041.30

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Solution

The fourth proportional to 7,377,879.70, 11,066,819.55 and 5,213,041.30 is: 7,819,561.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,377,879.70 : 11,066,819.55 = 5,213,041.30 : x
  2. Step 2: Convert to fraction form
    7,377,879.70/11,066,819.55 = 5,213,041.30/x
  3. Step 3: Cross multiply
    7,377,879.70x = 11,066,819.55 × 5,213,041.30
  4. Step 4: Simplify right side
    7,377,879.70x = 57,691,787,373,797.41
  5. Step 5: Solve for x
    x = 57,691,787,373,797.41/7,377,879.70
  6. Step 6: Final answer
    x = 7,819,561.95

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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.