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Finding the Fourth Proportional to 453,902.60, 680,853.90 and 419,688.20

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Solution

The fourth proportional to 453,902.60, 680,853.90 and 419,688.20 is: 629,532.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,902.60 : 680,853.90 = 419,688.20 : x
  2. Step 2: Convert to fraction form
    453,902.60/680,853.90 = 419,688.20/x
  3. Step 3: Cross multiply
    453,902.60x = 680,853.90 × 419,688.20
  4. Step 4: Simplify right side
    453,902.60x = 285,746,347,753.98
  5. Step 5: Solve for x
    x = 285,746,347,753.98/453,902.60
  6. Step 6: Final answer
    x = 629,532.30

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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.