Home / 807,738.60-1,211,607.90-275,860.20

Finding the Fourth Proportional to 807,738.60, 1,211,607.90 and 275,860.20

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Solution

The fourth proportional to 807,738.60, 1,211,607.90 and 275,860.20 is: 413,790.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,738.60 : 1,211,607.90 = 275,860.20 : x
  2. Step 2: Convert to fraction form
    807,738.60/1,211,607.90 = 275,860.20/x
  3. Step 3: Cross multiply
    807,738.60x = 1,211,607.90 × 275,860.20
  4. Step 4: Simplify right side
    807,738.60x = 334,234,397,615.58
  5. Step 5: Solve for x
    x = 334,234,397,615.58/807,738.60
  6. Step 6: Final answer
    x = 413,790.30

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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.