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Finding the Fourth Proportional to 396,340.20, 594,510.30 and 389,779.20

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Solution

The fourth proportional to 396,340.20, 594,510.30 and 389,779.20 is: 584,668.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,340.20 : 594,510.30 = 389,779.20 : x
  2. Step 2: Convert to fraction form
    396,340.20/594,510.30 = 389,779.20/x
  3. Step 3: Cross multiply
    396,340.20x = 594,510.30 × 389,779.20
  4. Step 4: Simplify right side
    396,340.20x = 231,727,749,125.76
  5. Step 5: Solve for x
    x = 231,727,749,125.76/396,340.20
  6. Step 6: Final answer
    x = 584,668.80

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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.