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Finding the Fourth Proportional to 4,481,067.72, 6,721,591.32 and 1,920,622.43

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Solution

The fourth proportional to 4,481,067.72, 6,721,591.32 and 1,920,622.43 is: 2,880,929.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,481,067.72 : 6,721,591.32 = 1,920,622.43 : x
  2. Step 2: Convert to fraction form
    4,481,067.72/6,721,591.32 = 1,920,622.43/x
  3. Step 3: Cross multiply
    4,481,067.72x = 6,721,591.32 × 1,920,622.43
  4. Step 4: Simplify right side
    4,481,067.72x = 12,909,639,054,485.31
  5. Step 5: Solve for x
    x = 12,909,639,054,485.31/4,481,067.72
  6. Step 6: Final answer
    x = 2,880,929.25

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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.