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Finding the Fourth Proportional to 721,056.87, 994,757.80 and 415,060.03

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Solution

The fourth proportional to 721,056.87, 994,757.80 and 415,060.03 is: 572,609.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,056.87 : 994,757.80 = 415,060.03 : x
  2. Step 2: Convert to fraction form
    721,056.87/994,757.80 = 415,060.03/x
  3. Step 3: Cross multiply
    721,056.87x = 994,757.80 × 415,060.03
  4. Step 4: Simplify right side
    721,056.87x = 412,884,202,310.73
  5. Step 5: Solve for x
    x = 412,884,202,310.73/721,056.87
  6. Step 6: Final answer
    x = 572,609.76

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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.