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Finding the Fourth Proportional to 3,189,335.82, 4,787,153.01 and 1,393,458.90

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Solution

The fourth proportional to 3,189,335.82, 4,787,153.01 and 1,393,458.90 is: 2,091,564.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189,335.82 : 4,787,153.01 = 1,393,458.90 : x
  2. Step 2: Convert to fraction form
    3,189,335.82/4,787,153.01 = 1,393,458.90/x
  3. Step 3: Cross multiply
    3,189,335.82x = 4,787,153.01 × 1,393,458.90
  4. Step 4: Simplify right side
    3,189,335.82x = 6,670,700,949,494.47
  5. Step 5: Solve for x
    x = 6,670,700,949,494.47/3,189,335.82
  6. Step 6: Final answer
    x = 2,091,564.30

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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.