Home / 379,748.30-569,124.16-279,438.80

Finding the Fourth Proportional to 379,748.30, 569,124.16 and 279,438.80

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Solution

The fourth proportional to 379,748.30, 569,124.16 and 279,438.80 is: 418,791.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,748.30 : 569,124.16 = 279,438.80 : x
  2. Step 2: Convert to fraction form
    379,748.30/569,124.16 = 279,438.80/x
  3. Step 3: Cross multiply
    379,748.30x = 569,124.16 × 279,438.80
  4. Step 4: Simplify right side
    379,748.30x = 159,035,372,321.41
  5. Step 5: Solve for x
    x = 159,035,372,321.41/379,748.30
  6. Step 6: Final answer
    x = 418,791.53

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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.