Home / 809,822.97-1,215,471.15-431,062.11

Finding the Fourth Proportional to 809,822.97, 1,215,471.15 and 431,062.11

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Solution

The fourth proportional to 809,822.97, 1,215,471.15 and 431,062.11 is: 646,985.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,822.97 : 1,215,471.15 = 431,062.11 : x
  2. Step 2: Convert to fraction form
    809,822.97/1,215,471.15 = 431,062.11/x
  3. Step 3: Cross multiply
    809,822.97x = 1,215,471.15 × 431,062.11
  4. Step 4: Simplify right side
    809,822.97x = 523,943,558,563.13
  5. Step 5: Solve for x
    x = 523,943,558,563.13/809,822.97
  6. Step 6: Final answer
    x = 646,985.30

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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.