Home / 818,020.54-1,227,096.42-285,529.78

Finding the Fourth Proportional to 818,020.54, 1,227,096.42 and 285,529.78

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Solution

The fourth proportional to 818,020.54, 1,227,096.42 and 285,529.78 is: 428,317.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,020.54 : 1,227,096.42 = 285,529.78 : x
  2. Step 2: Convert to fraction form
    818,020.54/1,227,096.42 = 285,529.78/x
  3. Step 3: Cross multiply
    818,020.54x = 1,227,096.42 × 285,529.78
  4. Step 4: Simplify right side
    818,020.54x = 350,372,570,841.39
  5. Step 5: Solve for x
    x = 350,372,570,841.39/818,020.54
  6. Step 6: Final answer
    x = 428,317.57

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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.