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Finding the Fourth Proportional to 573,437.56, 791,391.70 and 318,812.44

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Solution

The fourth proportional to 573,437.56, 791,391.70 and 318,812.44 is: 439,987.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,437.56 : 791,391.70 = 318,812.44 : x
  2. Step 2: Convert to fraction form
    573,437.56/791,391.70 = 318,812.44/x
  3. Step 3: Cross multiply
    573,437.56x = 791,391.70 × 318,812.44
  4. Step 4: Simplify right side
    573,437.56x = 252,305,518,872.75
  5. Step 5: Solve for x
    x = 252,305,518,872.75/573,437.56
  6. Step 6: Final answer
    x = 439,987.78

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1.5x scale

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.