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Finding the Fourth Proportional to 619,956,872.48, 855,600,975.60 and 463,051,869.68

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Solution

The fourth proportional to 619,956,872.48, 855,600,975.60 and 463,051,869.68 is: 639,056,761.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,956,872.48 : 855,600,975.60 = 463,051,869.68 : x
  2. Step 2: Convert to fraction form
    619,956,872.48/855,600,975.60 = 463,051,869.68/x
  3. Step 3: Cross multiply
    619,956,872.48x = 855,600,975.60 × 463,051,869.68
  4. Step 4: Simplify right side
    619,956,872.48x = 396,187,631,451,612,096
  5. Step 5: Solve for x
    x = 396,187,631,451,612,096/619,956,872.48
  6. Step 6: Final answer
    x = 639,056,761.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.