Home / 790,670.21-1,091,120.27-428,086.46

Finding the Fourth Proportional to 790,670.21, 1,091,120.27 and 428,086.46

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Solution

The fourth proportional to 790,670.21, 1,091,120.27 and 428,086.46 is: 590,756.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,670.21 : 1,091,120.27 = 428,086.46 : x
  2. Step 2: Convert to fraction form
    790,670.21/1,091,120.27 = 428,086.46/x
  3. Step 3: Cross multiply
    790,670.21x = 1,091,120.27 × 428,086.46
  4. Step 4: Simplify right side
    790,670.21x = 467,093,809,141.96
  5. Step 5: Solve for x
    x = 467,093,809,141.96/790,670.21
  6. Step 6: Final answer
    x = 590,756.81

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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.