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Finding the Fourth Proportional to 520,779.88, 781,169.82 and 494,185.96

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Solution

The fourth proportional to 520,779.88, 781,169.82 and 494,185.96 is: 741,278.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,779.88 : 781,169.82 = 494,185.96 : x
  2. Step 2: Convert to fraction form
    520,779.88/781,169.82 = 494,185.96/x
  3. Step 3: Cross multiply
    520,779.88x = 781,169.82 × 494,185.96
  4. Step 4: Simplify right side
    520,779.88x = 386,043,157,419.73
  5. Step 5: Solve for x
    x = 386,043,157,419.73/520,779.88
  6. Step 6: Final answer
    x = 741,278.94

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Double scale
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Similar ratio
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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.