Home / 812,181.49-1,120,819.32-449,611.40

Finding the Fourth Proportional to 812,181.49, 1,120,819.32 and 449,611.40

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Solution

The fourth proportional to 812,181.49, 1,120,819.32 and 449,611.40 is: 620,468.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,181.49 : 1,120,819.32 = 449,611.40 : x
  2. Step 2: Convert to fraction form
    812,181.49/1,120,819.32 = 449,611.40/x
  3. Step 3: Cross multiply
    812,181.49x = 1,120,819.32 × 449,611.40
  4. Step 4: Simplify right side
    812,181.49x = 503,933,143,612.25
  5. Step 5: Solve for x
    x = 503,933,143,612.25/812,181.49
  6. Step 6: Final answer
    x = 620,468.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.