Home / 1,278,500.78-1,917,754.80-331,879.70

Finding the Fourth Proportional to 1,278,500.78, 1,917,754.80 and 331,879.70

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Solution

The fourth proportional to 1,278,500.78, 1,917,754.80 and 331,879.70 is: 497,820.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,500.78 : 1,917,754.80 = 331,879.70 : x
  2. Step 2: Convert to fraction form
    1,278,500.78/1,917,754.80 = 331,879.70/x
  3. Step 3: Cross multiply
    1,278,500.78x = 1,917,754.80 × 331,879.70
  4. Step 4: Simplify right side
    1,278,500.78x = 636,463,887,697.56
  5. Step 5: Solve for x
    x = 636,463,887,697.56/1,278,500.78
  6. Step 6: Final answer
    x = 497,820.49

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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.