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Finding the Fourth Proportional to 573,645.18, 791,597.70 and 318,990.90

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Solution

The fourth proportional to 573,645.18, 791,597.70 and 318,990.90 is: 440,189.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,645.18 : 791,597.70 = 318,990.90 : x
  2. Step 2: Convert to fraction form
    573,645.18/791,597.70 = 318,990.90/x
  3. Step 3: Cross multiply
    573,645.18x = 791,597.70 × 318,990.90
  4. Step 4: Simplify right side
    573,645.18x = 252,512,462,760.93
  5. Step 5: Solve for x
    x = 252,512,462,760.93/573,645.18
  6. Step 6: Final answer
    x = 440,189.29

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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.