Home / 790,697.61-1,091,163.21-428,121.71

Finding the Fourth Proportional to 790,697.61, 1,091,163.21 and 428,121.71

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Solution

The fourth proportional to 790,697.61, 1,091,163.21 and 428,121.71 is: 590,808.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,697.61 : 1,091,163.21 = 428,121.71 : x
  2. Step 2: Convert to fraction form
    790,697.61/1,091,163.21 = 428,121.71/x
  3. Step 3: Cross multiply
    790,697.61x = 1,091,163.21 × 428,121.71
  4. Step 4: Simplify right side
    790,697.61x = 467,150,660,657.87
  5. Step 5: Solve for x
    x = 467,150,660,657.87/790,697.61
  6. Step 6: Final answer
    x = 590,808.24

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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.