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Finding the Fourth Proportional to 3,855,005.20, 5,776,978.20 and 2,836,176.40

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Solution

The fourth proportional to 3,855,005.20, 5,776,978.20 and 2,836,176.40 is: 4,250,196.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855,005.20 : 5,776,978.20 = 2,836,176.40 : x
  2. Step 2: Convert to fraction form
    3,855,005.20/5,776,978.20 = 2,836,176.40/x
  3. Step 3: Cross multiply
    3,855,005.20x = 5,776,978.20 × 2,836,176.40
  4. Step 4: Simplify right side
    3,855,005.20x = 16,384,529,234,154.48
  5. Step 5: Solve for x
    x = 16,384,529,234,154.48/3,855,005.20
  6. Step 6: Final answer
    x = 4,250,196.40

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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.