Home / 814,231.20-1,221,419.70-340,818.60

Finding the Fourth Proportional to 814,231.20, 1,221,419.70 and 340,818.60

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Solution

The fourth proportional to 814,231.20, 1,221,419.70 and 340,818.60 is: 511,258.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,231.20 : 1,221,419.70 = 340,818.60 : x
  2. Step 2: Convert to fraction form
    814,231.20/1,221,419.70 = 340,818.60/x
  3. Step 3: Cross multiply
    814,231.20x = 1,221,419.70 × 340,818.60
  4. Step 4: Simplify right side
    814,231.20x = 416,282,552,166.42
  5. Step 5: Solve for x
    x = 416,282,552,166.42/814,231.20
  6. Step 6: Final answer
    x = 511,258.41

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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.