Home / 693,480.80-1,040,221.20-220,203.20

Finding the Fourth Proportional to 693,480.80, 1,040,221.20 and 220,203.20

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Solution

The fourth proportional to 693,480.80, 1,040,221.20 and 220,203.20 is: 330,304.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,480.80 : 1,040,221.20 = 220,203.20 : x
  2. Step 2: Convert to fraction form
    693,480.80/1,040,221.20 = 220,203.20/x
  3. Step 3: Cross multiply
    693,480.80x = 1,040,221.20 × 220,203.20
  4. Step 4: Simplify right side
    693,480.80x = 229,060,036,947.84
  5. Step 5: Solve for x
    x = 229,060,036,947.84/693,480.80
  6. Step 6: Final answer
    x = 330,304.80

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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.