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Finding the Fourth Proportional to 396,335.20, 594,502.80 and 389,774.20

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Solution

The fourth proportional to 396,335.20, 594,502.80 and 389,774.20 is: 584,661.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,335.20 : 594,502.80 = 389,774.20 : x
  2. Step 2: Convert to fraction form
    396,335.20/594,502.80 = 389,774.20/x
  3. Step 3: Cross multiply
    396,335.20x = 594,502.80 × 389,774.20
  4. Step 4: Simplify right side
    396,335.20x = 231,721,853,267.76
  5. Step 5: Solve for x
    x = 231,721,853,267.76/396,335.20
  6. Step 6: Final answer
    x = 584,661.30

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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.