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Finding the Fourth Proportional to 492,758.30, 739,137.45 and 439,614.20

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Solution

The fourth proportional to 492,758.30, 739,137.45 and 439,614.20 is: 659,421.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,758.30 : 739,137.45 = 439,614.20 : x
  2. Step 2: Convert to fraction form
    492,758.30/739,137.45 = 439,614.20/x
  3. Step 3: Cross multiply
    492,758.30x = 739,137.45 × 439,614.20
  4. Step 4: Simplify right side
    492,758.30x = 324,935,318,771.79
  5. Step 5: Solve for x
    x = 324,935,318,771.79/492,758.30
  6. Step 6: Final answer
    x = 659,421.30

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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.