Home / 853,270.12-1,280,096.07-320,795.76

Finding the Fourth Proportional to 853,270.12, 1,280,096.07 and 320,795.76

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Solution

The fourth proportional to 853,270.12, 1,280,096.07 and 320,795.76 is: 481,265.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,270.12 : 1,280,096.07 = 320,795.76 : x
  2. Step 2: Convert to fraction form
    853,270.12/1,280,096.07 = 320,795.76/x
  3. Step 3: Cross multiply
    853,270.12x = 1,280,096.07 × 320,795.76
  4. Step 4: Simplify right side
    853,270.12x = 410,649,391,648.66
  5. Step 5: Solve for x
    x = 410,649,391,648.66/853,270.12
  6. Step 6: Final answer
    x = 481,265.41

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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.