Home / 741,637.20-1,112,455.80-320,619.60

Finding the Fourth Proportional to 741,637.20, 1,112,455.80 and 320,619.60

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Solution

The fourth proportional to 741,637.20, 1,112,455.80 and 320,619.60 is: 480,929.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    741,637.20 : 1,112,455.80 = 320,619.60 : x
  2. Step 2: Convert to fraction form
    741,637.20/1,112,455.80 = 320,619.60/x
  3. Step 3: Cross multiply
    741,637.20x = 1,112,455.80 × 320,619.60
  4. Step 4: Simplify right side
    741,637.20x = 356,675,133,613.68
  5. Step 5: Solve for x
    x = 356,675,133,613.68/741,637.20
  6. Step 6: Final answer
    x = 480,929.40

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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.