Home / 621,664,375.30-932,244,620.55-212,509,917.70

Finding the Fourth Proportional to 621,664,375.30, 932,244,620.55 and 212,509,917.70

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Solution

The fourth proportional to 621,664,375.30, 932,244,620.55 and 212,509,917.70 is: 318,678,752.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,664,375.30 : 932,244,620.55 = 212,509,917.70 : x
  2. Step 2: Convert to fraction form
    621,664,375.30/932,244,620.55 = 212,509,917.70/x
  3. Step 3: Cross multiply
    621,664,375.30x = 932,244,620.55 × 212,509,917.70
  4. Step 4: Simplify right side
    621,664,375.30x = 198,111,227,589,348,192
  5. Step 5: Solve for x
    x = 198,111,227,589,348,192/621,664,375.30
  6. Step 6: Final answer
    x = 318,678,752.49

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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.