Home / 1,427,321.62-1,969,522.32-815,514

Finding the Fourth Proportional to 1,427,321.62, 1,969,522.32 and 815,514

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Solution

The fourth proportional to 1,427,321.62, 1,969,522.32 and 815,514 is: 1,125,305.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427,321.62 : 1,969,522.32 = 815,514 : x
  2. Step 2: Convert to fraction form
    1,427,321.62/1,969,522.32 = 815,514/x
  3. Step 3: Cross multiply
    1,427,321.62x = 1,969,522.32 × 815,514
  4. Step 4: Simplify right side
    1,427,321.62x = 1,606,173,025,272.48
  5. Step 5: Solve for x
    x = 1,606,173,025,272.48/1,427,321.62
  6. Step 6: Final answer
    x = 1,125,305.61

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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.