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Finding the Fourth Proportional to 479,694,872.34, 719,542,217.73 and 261,528,675.30

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Solution

The fourth proportional to 479,694,872.34, 719,542,217.73 and 261,528,675.30 is: 392,292,963.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,694,872.34 : 719,542,217.73 = 261,528,675.30 : x
  2. Step 2: Convert to fraction form
    479,694,872.34/719,542,217.73 = 261,528,675.30/x
  3. Step 3: Cross multiply
    479,694,872.34x = 719,542,217.73 × 261,528,675.30
  4. Step 4: Simplify right side
    479,694,872.34x = 188,180,923,025,351,072
  5. Step 5: Solve for x
    x = 188,180,923,025,351,072/479,694,872.34
  6. Step 6: Final answer
    x = 392,292,963.46

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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.