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Finding the Fourth Proportional to 543,383.20, 815,074.80 and 341,304.40

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Solution

The fourth proportional to 543,383.20, 815,074.80 and 341,304.40 is: 511,956.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,383.20 : 815,074.80 = 341,304.40 : x
  2. Step 2: Convert to fraction form
    543,383.20/815,074.80 = 341,304.40/x
  3. Step 3: Cross multiply
    543,383.20x = 815,074.80 × 341,304.40
  4. Step 4: Simplify right side
    543,383.20x = 278,188,615,569.12
  5. Step 5: Solve for x
    x = 278,188,615,569.12/543,383.20
  6. Step 6: Final answer
    x = 511,956.60

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Similar ratio
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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.