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Finding the Fourth Proportional to 396,905.40, 595,358.10 and 358,851.60

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Solution

The fourth proportional to 396,905.40, 595,358.10 and 358,851.60 is: 538,277.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,905.40 : 595,358.10 = 358,851.60 : x
  2. Step 2: Convert to fraction form
    396,905.40/595,358.10 = 358,851.60/x
  3. Step 3: Cross multiply
    396,905.40x = 595,358.10 × 358,851.60
  4. Step 4: Simplify right side
    396,905.40x = 213,645,206,757.96
  5. Step 5: Solve for x
    x = 213,645,206,757.96/396,905.40
  6. Step 6: Final answer
    x = 538,277.40

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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.