Home / 805,768.34-1,111,960.88-443,219.78

Finding the Fourth Proportional to 805,768.34, 1,111,960.88 and 443,219.78

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Solution

The fourth proportional to 805,768.34, 1,111,960.88 and 443,219.78 is: 611,643.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,768.34 : 1,111,960.88 = 443,219.78 : x
  2. Step 2: Convert to fraction form
    805,768.34/1,111,960.88 = 443,219.78/x
  3. Step 3: Cross multiply
    805,768.34x = 1,111,960.88 × 443,219.78
  4. Step 4: Simplify right side
    805,768.34x = 492,843,056,327.64
  5. Step 5: Solve for x
    x = 492,843,056,327.64/805,768.34
  6. Step 6: Final answer
    x = 611,643.61

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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.