Home / 791,131.87-1,091,767.22-428,555.72

Finding the Fourth Proportional to 791,131.87, 1,091,767.22 and 428,555.72

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Solution

The fourth proportional to 791,131.87, 1,091,767.22 and 428,555.72 is: 591,409.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,131.87 : 1,091,767.22 = 428,555.72 : x
  2. Step 2: Convert to fraction form
    791,131.87/1,091,767.22 = 428,555.72/x
  3. Step 3: Cross multiply
    791,131.87x = 1,091,767.22 × 428,555.72
  4. Step 4: Simplify right side
    791,131.87x = 467,883,085,502.66
  5. Step 5: Solve for x
    x = 467,883,085,502.66/791,131.87
  6. Step 6: Final answer
    x = 591,409.73

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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.