Home / 809,884.40-1,117,764.66-499,967.48

Finding the Fourth Proportional to 809,884.40, 1,117,764.66 and 499,967.48

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Solution

The fourth proportional to 809,884.40, 1,117,764.66 and 499,967.48 is: 690,031.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,884.40 : 1,117,764.66 = 499,967.48 : x
  2. Step 2: Convert to fraction form
    809,884.40/1,117,764.66 = 499,967.48/x
  3. Step 3: Cross multiply
    809,884.40x = 1,117,764.66 × 499,967.48
  4. Step 4: Simplify right side
    809,884.40x = 558,845,980,293.26
  5. Step 5: Solve for x
    x = 558,845,980,293.26/809,884.40
  6. Step 6: Final answer
    x = 690,031.79

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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.