Home / 725,163.86-1,000,743.94-398,474.22

Finding the Fourth Proportional to 725,163.86, 1,000,743.94 and 398,474.22

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Solution

The fourth proportional to 725,163.86, 1,000,743.94 and 398,474.22 is: 549,904.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,163.86 : 1,000,743.94 = 398,474.22 : x
  2. Step 2: Convert to fraction form
    725,163.86/1,000,743.94 = 398,474.22/x
  3. Step 3: Cross multiply
    725,163.86x = 1,000,743.94 × 398,474.22
  4. Step 4: Simplify right side
    725,163.86x = 398,770,660,911.23
  5. Step 5: Solve for x
    x = 398,770,660,911.23/725,163.86
  6. Step 6: Final answer
    x = 549,904.21

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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.