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Finding the Fourth Proportional to 3,856,985.40, 5,410,977 and 3,856,985.40

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Solution

The fourth proportional to 3,856,985.40, 5,410,977 and 3,856,985.40 is: 5,410,977

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,856,985.40 : 5,410,977 = 3,856,985.40 : x
  2. Step 2: Convert to fraction form
    3,856,985.40/5,410,977 = 3,856,985.40/x
  3. Step 3: Cross multiply
    3,856,985.40x = 5,410,977 × 3,856,985.40
  4. Step 4: Simplify right side
    3,856,985.40x = 20,870,059,288,735.80
  5. Step 5: Solve for x
    x = 20,870,059,288,735.80/3,856,985.40
  6. Step 6: Final answer
    x = 5,410,977

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.