Home / 2,800,279.80-4,200,419.70-1,605,886.20

Finding the Fourth Proportional to 2,800,279.80, 4,200,419.70 and 1,605,886.20

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Solution

The fourth proportional to 2,800,279.80, 4,200,419.70 and 1,605,886.20 is: 2,408,829.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800,279.80 : 4,200,419.70 = 1,605,886.20 : x
  2. Step 2: Convert to fraction form
    2,800,279.80/4,200,419.70 = 1,605,886.20/x
  3. Step 3: Cross multiply
    2,800,279.80x = 4,200,419.70 × 1,605,886.20
  4. Step 4: Simplify right side
    2,800,279.80x = 6,745,396,030,438.14
  5. Step 5: Solve for x
    x = 6,745,396,030,438.14/2,800,279.80
  6. Step 6: Final answer
    x = 2,408,829.30

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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.