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Finding the Fourth Proportional to 573,379.24, 791,264.28 and 318,728.20

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Solution

The fourth proportional to 573,379.24, 791,264.28 and 318,728.20 is: 439,845.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,379.24 : 791,264.28 = 318,728.20 : x
  2. Step 2: Convert to fraction form
    573,379.24/791,264.28 = 318,728.20/x
  3. Step 3: Cross multiply
    573,379.24x = 791,264.28 × 318,728.20
  4. Step 4: Simplify right side
    573,379.24x = 252,198,239,688.70
  5. Step 5: Solve for x
    x = 252,198,239,688.70/573,379.24
  6. Step 6: Final answer
    x = 439,845.43

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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.