Home / 809,824.47-1,215,473.40-431,063.61

Finding the Fourth Proportional to 809,824.47, 1,215,473.40 and 431,063.61

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Solution

The fourth proportional to 809,824.47, 1,215,473.40 and 431,063.61 is: 646,987.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,824.47 : 1,215,473.40 = 431,063.61 : x
  2. Step 2: Convert to fraction form
    809,824.47/1,215,473.40 = 431,063.61/x
  3. Step 3: Cross multiply
    809,824.47x = 1,215,473.40 × 431,063.61
  4. Step 4: Simplify right side
    809,824.47x = 523,946,351,662.97
  5. Step 5: Solve for x
    x = 523,946,351,662.97/809,824.47
  6. Step 6: Final answer
    x = 646,987.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.