Home / 811,965.48-1,120,514.76-449,414.52

Finding the Fourth Proportional to 811,965.48, 1,120,514.76 and 449,414.52

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Solution

The fourth proportional to 811,965.48, 1,120,514.76 and 449,414.52 is: 620,193.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,965.48 : 1,120,514.76 = 449,414.52 : x
  2. Step 2: Convert to fraction form
    811,965.48/1,120,514.76 = 449,414.52/x
  3. Step 3: Cross multiply
    811,965.48x = 1,120,514.76 × 449,414.52
  4. Step 4: Simplify right side
    811,965.48x = 503,575,603,018.32
  5. Step 5: Solve for x
    x = 503,575,603,018.32/811,965.48
  6. Step 6: Final answer
    x = 620,193.36

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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.