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Finding the Fourth Proportional to 2,992,392.80, 4,483,664.40 and 1,728,015.20

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Solution

The fourth proportional to 2,992,392.80, 4,483,664.40 and 1,728,015.20 is: 2,589,178.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,992,392.80 : 4,483,664.40 = 1,728,015.20 : x
  2. Step 2: Convert to fraction form
    2,992,392.80/4,483,664.40 = 1,728,015.20/x
  3. Step 3: Cross multiply
    2,992,392.80x = 4,483,664.40 × 1,728,015.20
  4. Step 4: Simplify right side
    2,992,392.80x = 7,747,840,234,898.88
  5. Step 5: Solve for x
    x = 7,747,840,234,898.88/2,992,392.80
  6. Step 6: Final answer
    x = 2,589,178.88

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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.