Home / 814,241.20-1,221,434.70-340,828.60

Finding the Fourth Proportional to 814,241.20, 1,221,434.70 and 340,828.60

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Solution

The fourth proportional to 814,241.20, 1,221,434.70 and 340,828.60 is: 511,273.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,241.20 : 1,221,434.70 = 340,828.60 : x
  2. Step 2: Convert to fraction form
    814,241.20/1,221,434.70 = 340,828.60/x
  3. Step 3: Cross multiply
    814,241.20x = 1,221,434.70 × 340,828.60
  4. Step 4: Simplify right side
    814,241.20x = 416,299,878,792.42
  5. Step 5: Solve for x
    x = 416,299,878,792.42/814,241.20
  6. Step 6: Final answer
    x = 511,273.41

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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.