Home / 639,566,672.78-959,204,977.98-289,581,697.57

Finding the Fourth Proportional to 639,566,672.78, 959,204,977.98 and 289,581,697.57

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Solution

The fourth proportional to 639,566,672.78, 959,204,977.98 and 289,581,697.57 is: 434,306,879.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,566,672.78 : 959,204,977.98 = 289,581,697.57 : x
  2. Step 2: Convert to fraction form
    639,566,672.78/959,204,977.98 = 289,581,697.57/x
  3. Step 3: Cross multiply
    639,566,672.78x = 959,204,977.98 × 289,581,697.57
  4. Step 4: Simplify right side
    639,566,672.78x = 277,768,205,841,042,880
  5. Step 5: Solve for x
    x = 277,768,205,841,042,880/639,566,672.78
  6. Step 6: Final answer
    x = 434,306,879.43

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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.