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Finding the Fourth Proportional to 573,581.82, 791,538 and 318,930.78

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Solution

The fourth proportional to 573,581.82, 791,538 and 318,930.78 is: 440,121.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,581.82 : 791,538 = 318,930.78 : x
  2. Step 2: Convert to fraction form
    573,581.82/791,538 = 318,930.78/x
  3. Step 3: Cross multiply
    573,581.82x = 791,538 × 318,930.78
  4. Step 4: Simplify right side
    573,581.82x = 252,445,831,739.64
  5. Step 5: Solve for x
    x = 252,445,831,739.64/573,581.82
  6. Step 6: Final answer
    x = 440,121.75

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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.