Home / 815,928-1,224,023.13-342,748.68

Finding the Fourth Proportional to 815,928, 1,224,023.13 and 342,748.68

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Solution

The fourth proportional to 815,928, 1,224,023.13 and 342,748.68 is: 514,178.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,928 : 1,224,023.13 = 342,748.68 : x
  2. Step 2: Convert to fraction form
    815,928/1,224,023.13 = 342,748.68/x
  3. Step 3: Cross multiply
    815,928x = 1,224,023.13 × 342,748.68
  4. Step 4: Simplify right side
    815,928x = 419,532,312,096.97
  5. Step 5: Solve for x
    x = 419,532,312,096.97/815,928
  6. Step 6: Final answer
    x = 514,178.10

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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.