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Finding the Fourth Proportional to 447,082.80, 670,624.20 and 329,276.40

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Solution

The fourth proportional to 447,082.80, 670,624.20 and 329,276.40 is: 493,914.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,082.80 : 670,624.20 = 329,276.40 : x
  2. Step 2: Convert to fraction form
    447,082.80/670,624.20 = 329,276.40/x
  3. Step 3: Cross multiply
    447,082.80x = 670,624.20 × 329,276.40
  4. Step 4: Simplify right side
    447,082.80x = 220,820,722,328.88
  5. Step 5: Solve for x
    x = 220,820,722,328.88/447,082.80
  6. Step 6: Final answer
    x = 493,914.60

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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.