Home / 811,942.32-1,120,464.90-449,366.34

Finding the Fourth Proportional to 811,942.32, 1,120,464.90 and 449,366.34

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Solution

The fourth proportional to 811,942.32, 1,120,464.90 and 449,366.34 is: 620,116.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,942.32 : 1,120,464.90 = 449,366.34 : x
  2. Step 2: Convert to fraction form
    811,942.32/1,120,464.90 = 449,366.34/x
  3. Step 3: Cross multiply
    811,942.32x = 1,120,464.90 × 449,366.34
  4. Step 4: Simplify right side
    811,942.32x = 503,499,211,211.47
  5. Step 5: Solve for x
    x = 503,499,211,211.47/811,942.32
  6. Step 6: Final answer
    x = 620,116.97

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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.