Home / 414,919.40-622,839.90-257,325.80

Finding the Fourth Proportional to 414,919.40, 622,839.90 and 257,325.80

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Solution

The fourth proportional to 414,919.40, 622,839.90 and 257,325.80 is: 386,274.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,919.40 : 622,839.90 = 257,325.80 : x
  2. Step 2: Convert to fraction form
    414,919.40/622,839.90 = 257,325.80/x
  3. Step 3: Cross multiply
    414,919.40x = 622,839.90 × 257,325.80
  4. Step 4: Simplify right side
    414,919.40x = 160,272,775,539.42
  5. Step 5: Solve for x
    x = 160,272,775,539.42/414,919.40
  6. Step 6: Final answer
    x = 386,274.48

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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.