Home / 639,156,348.78-959,010,720.24-343,706,144.27

Finding the Fourth Proportional to 639,156,348.78, 959,010,720.24 and 343,706,144.27

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Solution

The fourth proportional to 639,156,348.78, 959,010,720.24 and 343,706,144.27 is: 515,707,741.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,156,348.78 : 959,010,720.24 = 343,706,144.27 : x
  2. Step 2: Convert to fraction form
    639,156,348.78/959,010,720.24 = 343,706,144.27/x
  3. Step 3: Cross multiply
    639,156,348.78x = 959,010,720.24 × 343,706,144.27
  4. Step 4: Simplify right side
    639,156,348.78x = 329,617,876,962,491,008
  5. Step 5: Solve for x
    x = 329,617,876,962,491,008/639,156,348.78
  6. Step 6: Final answer
    x = 515,707,741.29

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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.