Home / 813,067,731.09-1,219,627,910.34-387,063,961.18

Finding the Fourth Proportional to 813,067,731.09, 1,219,627,910.34 and 387,063,961.18

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Solution

The fourth proportional to 813,067,731.09, 1,219,627,910.34 and 387,063,961.18 is: 580,608,468.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,067,731.09 : 1,219,627,910.34 = 387,063,961.18 : x
  2. Step 2: Convert to fraction form
    813,067,731.09/1,219,627,910.34 = 387,063,961.18/x
  3. Step 3: Cross multiply
    813,067,731.09x = 1,219,627,910.34 × 387,063,961.18
  4. Step 4: Simplify right side
    813,067,731.09x = 472,074,010,147,128,000
  5. Step 5: Solve for x
    x = 472,074,010,147,128,000/813,067,731.09
  6. Step 6: Final answer
    x = 580,608,468.52

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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.