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Finding the Fourth Proportional to 573,447.38, 791,358.30 and 318,798.56

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Solution

The fourth proportional to 573,447.38, 791,358.30 and 318,798.56 is: 439,942.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,447.38 : 791,358.30 = 318,798.56 : x
  2. Step 2: Convert to fraction form
    573,447.38/791,358.30 = 318,798.56/x
  3. Step 3: Cross multiply
    573,447.38x = 791,358.30 × 318,798.56
  4. Step 4: Simplify right side
    573,447.38x = 252,283,888,462.44
  5. Step 5: Solve for x
    x = 252,283,888,462.44/573,447.38
  6. Step 6: Final answer
    x = 439,942.53

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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.