Home / 826,539.78-1,239,809.70-327,903.78

Finding the Fourth Proportional to 826,539.78, 1,239,809.70 and 327,903.78

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Solution

The fourth proportional to 826,539.78, 1,239,809.70 and 327,903.78 is: 491,855.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,539.78 : 1,239,809.70 = 327,903.78 : x
  2. Step 2: Convert to fraction form
    826,539.78/1,239,809.70 = 327,903.78/x
  3. Step 3: Cross multiply
    826,539.78x = 1,239,809.70 × 327,903.78
  4. Step 4: Simplify right side
    826,539.78x = 406,538,287,110.67
  5. Step 5: Solve for x
    x = 406,538,287,110.67/826,539.78
  6. Step 6: Final answer
    x = 491,855.68

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Similar ratio
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1.5x scale

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.