Home / 396,979.20-595,468.80-368,985.60

Finding the Fourth Proportional to 396,979.20, 595,468.80 and 368,985.60

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Solution

The fourth proportional to 396,979.20, 595,468.80 and 368,985.60 is: 553,478.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,979.20 : 595,468.80 = 368,985.60 : x
  2. Step 2: Convert to fraction form
    396,979.20/595,468.80 = 368,985.60/x
  3. Step 3: Cross multiply
    396,979.20x = 595,468.80 × 368,985.60
  4. Step 4: Simplify right side
    396,979.20x = 219,719,412,449.28
  5. Step 5: Solve for x
    x = 219,719,412,449.28/396,979.20
  6. Step 6: Final answer
    x = 553,478.40

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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.