Home / 699,843.60-1,049,765.40-279,421.20

Finding the Fourth Proportional to 699,843.60, 1,049,765.40 and 279,421.20

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Solution

The fourth proportional to 699,843.60, 1,049,765.40 and 279,421.20 is: 419,131.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,843.60 : 1,049,765.40 = 279,421.20 : x
  2. Step 2: Convert to fraction form
    699,843.60/1,049,765.40 = 279,421.20/x
  3. Step 3: Cross multiply
    699,843.60x = 1,049,765.40 × 279,421.20
  4. Step 4: Simplify right side
    699,843.60x = 293,326,707,786.48
  5. Step 5: Solve for x
    x = 293,326,707,786.48/699,843.60
  6. Step 6: Final answer
    x = 419,131.80

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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.