Home / 1,036,120.20-1,555,240.40-855,630.74

Finding the Fourth Proportional to 1,036,120.20, 1,555,240.40 and 855,630.74

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Solution

The fourth proportional to 1,036,120.20, 1,555,240.40 and 855,630.74 is: 1,284,321.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036,120.20 : 1,555,240.40 = 855,630.74 : x
  2. Step 2: Convert to fraction form
    1,036,120.20/1,555,240.40 = 855,630.74/x
  3. Step 3: Cross multiply
    1,036,120.20x = 1,555,240.40 × 855,630.74
  4. Step 4: Simplify right side
    1,036,120.20x = 1,330,711,494,329.90
  5. Step 5: Solve for x
    x = 1,330,711,494,329.90/1,036,120.20
  6. Step 6: Final answer
    x = 1,284,321.54

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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.