Home / 815,410.80-1,223,116.20-762,922.80

Finding the Fourth Proportional to 815,410.80, 1,223,116.20 and 762,922.80

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Solution

The fourth proportional to 815,410.80, 1,223,116.20 and 762,922.80 is: 1,144,384.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,410.80 : 1,223,116.20 = 762,922.80 : x
  2. Step 2: Convert to fraction form
    815,410.80/1,223,116.20 = 762,922.80/x
  3. Step 3: Cross multiply
    815,410.80x = 1,223,116.20 × 762,922.80
  4. Step 4: Simplify right side
    815,410.80x = 933,143,236,029.36
  5. Step 5: Solve for x
    x = 933,143,236,029.36/815,410.80
  6. Step 6: Final answer
    x = 1,144,384.20

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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.