Home / 814,228.20-1,221,415.20-340,815.60

Finding the Fourth Proportional to 814,228.20, 1,221,415.20 and 340,815.60

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Solution

The fourth proportional to 814,228.20, 1,221,415.20 and 340,815.60 is: 511,253.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,228.20 : 1,221,415.20 = 340,815.60 : x
  2. Step 2: Convert to fraction form
    814,228.20/1,221,415.20 = 340,815.60/x
  3. Step 3: Cross multiply
    814,228.20x = 1,221,415.20 × 340,815.60
  4. Step 4: Simplify right side
    814,228.20x = 416,277,354,237.12
  5. Step 5: Solve for x
    x = 416,277,354,237.12/814,228.20
  6. Step 6: Final answer
    x = 511,253.91

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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.