Home / 790,954.81-1,091,517.24-428,378.65

Finding the Fourth Proportional to 790,954.81, 1,091,517.24 and 428,378.65

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Solution

The fourth proportional to 790,954.81, 1,091,517.24 and 428,378.65 is: 591,162.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,954.81 : 1,091,517.24 = 428,378.65 : x
  2. Step 2: Convert to fraction form
    790,954.81/1,091,517.24 = 428,378.65/x
  3. Step 3: Cross multiply
    790,954.81x = 1,091,517.24 × 428,378.65
  4. Step 4: Simplify right side
    790,954.81x = 467,582,681,722.93
  5. Step 5: Solve for x
    x = 467,582,681,722.93/790,954.81
  6. Step 6: Final answer
    x = 591,162.32

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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.