Home / 741,140.70-1,112,229.45-320,718.30

Finding the Fourth Proportional to 741,140.70, 1,112,229.45 and 320,718.30

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Solution

The fourth proportional to 741,140.70, 1,112,229.45 and 320,718.30 is: 481,301.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    741,140.70 : 1,112,229.45 = 320,718.30 : x
  2. Step 2: Convert to fraction form
    741,140.70/1,112,229.45 = 320,718.30/x
  3. Step 3: Cross multiply
    741,140.70x = 1,112,229.45 × 320,718.30
  4. Step 4: Simplify right side
    741,140.70x = 356,712,338,413.94
  5. Step 5: Solve for x
    x = 356,712,338,413.94/741,140.70
  6. Step 6: Final answer
    x = 481,301.78

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Double scale
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Similar ratio
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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.