Home / 753,906.90-1,040,399.58-409,742.88

Finding the Fourth Proportional to 753,906.90, 1,040,399.58 and 409,742.88

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Solution

The fourth proportional to 753,906.90, 1,040,399.58 and 409,742.88 is: 565,449.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,906.90 : 1,040,399.58 = 409,742.88 : x
  2. Step 2: Convert to fraction form
    753,906.90/1,040,399.58 = 409,742.88/x
  3. Step 3: Cross multiply
    753,906.90x = 1,040,399.58 × 409,742.88
  4. Step 4: Simplify right side
    753,906.90x = 426,296,320,259.99
  5. Step 5: Solve for x
    x = 426,296,320,259.99/753,906.90
  6. Step 6: Final answer
    x = 565,449.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.