Home / 1,278,887.46-1,917,915.86-425,729.94

Finding the Fourth Proportional to 1,278,887.46, 1,917,915.86 and 425,729.94

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Solution

The fourth proportional to 1,278,887.46, 1,917,915.86 and 425,729.94 is: 638,456.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,887.46 : 1,917,915.86 = 425,729.94 : x
  2. Step 2: Convert to fraction form
    1,278,887.46/1,917,915.86 = 425,729.94/x
  3. Step 3: Cross multiply
    1,278,887.46x = 1,917,915.86 × 425,729.94
  4. Step 4: Simplify right side
    1,278,887.46x = 816,514,204,002.85
  5. Step 5: Solve for x
    x = 816,514,204,002.85/1,278,887.46
  6. Step 6: Final answer
    x = 638,456.65

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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.