Home / 741,211.20-1,112,335.20-320,788.80

Finding the Fourth Proportional to 741,211.20, 1,112,335.20 and 320,788.80

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Solution

The fourth proportional to 741,211.20, 1,112,335.20 and 320,788.80 is: 481,407.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    741,211.20 : 1,112,335.20 = 320,788.80 : x
  2. Step 2: Convert to fraction form
    741,211.20/1,112,335.20 = 320,788.80/x
  3. Step 3: Cross multiply
    741,211.20x = 1,112,335.20 × 320,788.80
  4. Step 4: Simplify right side
    741,211.20x = 356,824,674,005.76
  5. Step 5: Solve for x
    x = 356,824,674,005.76/741,211.20
  6. Step 6: Final answer
    x = 481,407.56

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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.