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Finding the Fourth Proportional to 797,543.80, 1,100,979 and 491,674.84

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Solution

The fourth proportional to 797,543.80, 1,100,979 and 491,674.84 is: 678,738.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    797,543.80 : 1,100,979 = 491,674.84 : x
  2. Step 2: Convert to fraction form
    797,543.80/1,100,979 = 491,674.84/x
  3. Step 3: Cross multiply
    797,543.80x = 1,100,979 × 491,674.84
  4. Step 4: Simplify right side
    797,543.80x = 541,323,673,668.36
  5. Step 5: Solve for x
    x = 541,323,673,668.36/797,543.80
  6. Step 6: Final answer
    x = 678,738.49

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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.