Home / 1,299,193.20-1,948,789.80-820,896.30

Finding the Fourth Proportional to 1,299,193.20, 1,948,789.80 and 820,896.30

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Solution

The fourth proportional to 1,299,193.20, 1,948,789.80 and 820,896.30 is: 1,231,344.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,193.20 : 1,948,789.80 = 820,896.30 : x
  2. Step 2: Convert to fraction form
    1,299,193.20/1,948,789.80 = 820,896.30/x
  3. Step 3: Cross multiply
    1,299,193.20x = 1,948,789.80 × 820,896.30
  4. Step 4: Simplify right side
    1,299,193.20x = 1,599,754,336,297.74
  5. Step 5: Solve for x
    x = 1,599,754,336,297.74/1,299,193.20
  6. Step 6: Final answer
    x = 1,231,344.45

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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.