Home / 814,811.80-1,222,217.70-511,693.60

Finding the Fourth Proportional to 814,811.80, 1,222,217.70 and 511,693.60

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Solution

The fourth proportional to 814,811.80, 1,222,217.70 and 511,693.60 is: 767,540.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,811.80 : 1,222,217.70 = 511,693.60 : x
  2. Step 2: Convert to fraction form
    814,811.80/1,222,217.70 = 511,693.60/x
  3. Step 3: Cross multiply
    814,811.80x = 1,222,217.70 × 511,693.60
  4. Step 4: Simplify right side
    814,811.80x = 625,400,974,896.72
  5. Step 5: Solve for x
    x = 625,400,974,896.72/814,811.80
  6. Step 6: Final answer
    x = 767,540.40

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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.