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Finding the Fourth Proportional to 543,614.40, 815,551.20 and 262,900.80

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Solution

The fourth proportional to 543,614.40, 815,551.20 and 262,900.80 is: 394,413.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,614.40 : 815,551.20 = 262,900.80 : x
  2. Step 2: Convert to fraction form
    543,614.40/815,551.20 = 262,900.80/x
  3. Step 3: Cross multiply
    543,614.40x = 815,551.20 × 262,900.80
  4. Step 4: Simplify right side
    543,614.40x = 214,409,062,920.96
  5. Step 5: Solve for x
    x = 214,409,062,920.96/543,614.40
  6. Step 6: Final answer
    x = 394,413.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.