Home / 3,120,190.80-4,680,286.20-2,765,605.20

Finding the Fourth Proportional to 3,120,190.80, 4,680,286.20 and 2,765,605.20

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Solution

The fourth proportional to 3,120,190.80, 4,680,286.20 and 2,765,605.20 is: 4,148,407.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,190.80 : 4,680,286.20 = 2,765,605.20 : x
  2. Step 2: Convert to fraction form
    3,120,190.80/4,680,286.20 = 2,765,605.20/x
  3. Step 3: Cross multiply
    3,120,190.80x = 4,680,286.20 × 2,765,605.20
  4. Step 4: Simplify right side
    3,120,190.80x = 12,943,823,852,208.24
  5. Step 5: Solve for x
    x = 12,943,823,852,208.24/3,120,190.80
  6. Step 6: Final answer
    x = 4,148,407.80

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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.