Home / 419,823.84-579,357.78-274,729.15

Finding the Fourth Proportional to 419,823.84, 579,357.78 and 274,729.15

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Solution

The fourth proportional to 419,823.84, 579,357.78 and 274,729.15 is: 379,126.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,823.84 : 579,357.78 = 274,729.15 : x
  2. Step 2: Convert to fraction form
    419,823.84/579,357.78 = 274,729.15/x
  3. Step 3: Cross multiply
    419,823.84x = 579,357.78 × 274,729.15
  4. Step 4: Simplify right side
    419,823.84x = 159,166,467,548.50
  5. Step 5: Solve for x
    x = 159,166,467,548.50/419,823.84
  6. Step 6: Final answer
    x = 379,126.80

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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.