Home / 721,279.80-1,081,919.70-222,643.80

Finding the Fourth Proportional to 721,279.80, 1,081,919.70 and 222,643.80

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Solution

The fourth proportional to 721,279.80, 1,081,919.70 and 222,643.80 is: 333,965.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,279.80 : 1,081,919.70 = 222,643.80 : x
  2. Step 2: Convert to fraction form
    721,279.80/1,081,919.70 = 222,643.80/x
  3. Step 3: Cross multiply
    721,279.80x = 1,081,919.70 × 222,643.80
  4. Step 4: Simplify right side
    721,279.80x = 240,882,713,302.86
  5. Step 5: Solve for x
    x = 240,882,713,302.86/721,279.80
  6. Step 6: Final answer
    x = 333,965.70

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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.