Home / 811,520.82-1,119,546.62-489,047.66

Finding the Fourth Proportional to 811,520.82, 1,119,546.62 and 489,047.66

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Solution

The fourth proportional to 811,520.82, 1,119,546.62 and 489,047.66 is: 674,673.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,520.82 : 1,119,546.62 = 489,047.66 : x
  2. Step 2: Convert to fraction form
    811,520.82/1,119,546.62 = 489,047.66/x
  3. Step 3: Cross multiply
    811,520.82x = 1,119,546.62 × 489,047.66
  4. Step 4: Simplify right side
    811,520.82x = 547,511,654,771.91
  5. Step 5: Solve for x
    x = 547,511,654,771.91/811,520.82
  6. Step 6: Final answer
    x = 674,673.58

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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.