Home / 812,180.75-1,120,818.29-449,610.65

Finding the Fourth Proportional to 812,180.75, 1,120,818.29 and 449,610.65

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Solution

The fourth proportional to 812,180.75, 1,120,818.29 and 449,610.65 is: 620,467.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,180.75 : 1,120,818.29 = 449,610.65 : x
  2. Step 2: Convert to fraction form
    812,180.75/1,120,818.29 = 449,610.65/x
  3. Step 3: Cross multiply
    812,180.75x = 1,120,818.29 × 449,610.65
  4. Step 4: Simplify right side
    812,180.75x = 503,931,840,452.78
  5. Step 5: Solve for x
    x = 503,931,840,452.78/812,180.75
  6. Step 6: Final answer
    x = 620,467.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.