Home / 812,878.94-1,220,074.97-413,818.47

Finding the Fourth Proportional to 812,878.94, 1,220,074.97 and 413,818.47

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Solution

The fourth proportional to 812,878.94, 1,220,074.97 and 413,818.47 is: 621,112.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,878.94 : 1,220,074.97 = 413,818.47 : x
  2. Step 2: Convert to fraction form
    812,878.94/1,220,074.97 = 413,818.47/x
  3. Step 3: Cross multiply
    812,878.94x = 1,220,074.97 × 413,818.47
  4. Step 4: Simplify right side
    812,878.94x = 504,889,555,301.60
  5. Step 5: Solve for x
    x = 504,889,555,301.60/812,878.94
  6. Step 6: Final answer
    x = 621,112.85

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1.5x scale

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.