Home / 812,181.31-1,120,819.07-449,611.22

Finding the Fourth Proportional to 812,181.31, 1,120,819.07 and 449,611.22

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Solution

The fourth proportional to 812,181.31, 1,120,819.07 and 449,611.22 is: 620,468.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,181.31 : 1,120,819.07 = 449,611.22 : x
  2. Step 2: Convert to fraction form
    812,181.31/1,120,819.07 = 449,611.22/x
  3. Step 3: Cross multiply
    812,181.31x = 1,120,819.07 × 449,611.22
  4. Step 4: Simplify right side
    812,181.31x = 503,932,828,337.94
  5. Step 5: Solve for x
    x = 503,932,828,337.94/812,181.31
  6. Step 6: Final answer
    x = 620,468.39

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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.