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Finding the Fourth Proportional to 2,784,401.80, 4,171,073.10 and 1,659,128.20

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Solution

The fourth proportional to 2,784,401.80, 4,171,073.10 and 1,659,128.20 is: 2,485,397.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,784,401.80 : 4,171,073.10 = 1,659,128.20 : x
  2. Step 2: Convert to fraction form
    2,784,401.80/4,171,073.10 = 1,659,128.20/x
  3. Step 3: Cross multiply
    2,784,401.80x = 4,171,073.10 × 1,659,128.20
  4. Step 4: Simplify right side
    2,784,401.80x = 6,920,345,004,471.42
  5. Step 5: Solve for x
    x = 6,920,345,004,471.42/2,784,401.80
  6. Step 6: Final answer
    x = 2,485,397.40

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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.