Home / 729,491,655.89-1,006,697,154.29-394,964,137.32

Finding the Fourth Proportional to 729,491,655.89, 1,006,697,154.29 and 394,964,137.32

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Solution

The fourth proportional to 729,491,655.89, 1,006,697,154.29 and 394,964,137.32 is: 545,049,788.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,491,655.89 : 1,006,697,154.29 = 394,964,137.32 : x
  2. Step 2: Convert to fraction form
    729,491,655.89/1,006,697,154.29 = 394,964,137.32/x
  3. Step 3: Cross multiply
    729,491,655.89x = 1,006,697,154.29 × 394,964,137.32
  4. Step 4: Simplify right side
    729,491,655.89x = 397,609,273,084,673,920
  5. Step 5: Solve for x
    x = 397,609,273,084,673,920/729,491,655.89
  6. Step 6: Final answer
    x = 545,049,788.96

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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.