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Finding the Fourth Proportional to 7,158,906.66, 9,879,410.08 and 3,895,858.92

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Solution

The fourth proportional to 7,158,906.66, 9,879,410.08 and 3,895,858.92 is: 5,376,350.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,158,906.66 : 9,879,410.08 = 3,895,858.92 : x
  2. Step 2: Convert to fraction form
    7,158,906.66/9,879,410.08 = 3,895,858.92/x
  3. Step 3: Cross multiply
    7,158,906.66x = 9,879,410.08 × 3,895,858.92
  4. Step 4: Simplify right side
    7,158,906.66x = 38,488,787,884,505.91
  5. Step 5: Solve for x
    x = 38,488,787,884,505.91/7,158,906.66
  6. Step 6: Final answer
    x = 5,376,350.01

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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.