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Finding the Fourth Proportional to 579,846.81, 800,195.09 and 321,728.43

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Solution

The fourth proportional to 579,846.81, 800,195.09 and 321,728.43 is: 443,988.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,846.81 : 800,195.09 = 321,728.43 : x
  2. Step 2: Convert to fraction form
    579,846.81/800,195.09 = 321,728.43/x
  3. Step 3: Cross multiply
    579,846.81x = 800,195.09 × 321,728.43
  4. Step 4: Simplify right side
    579,846.81x = 257,445,509,999.41
  5. Step 5: Solve for x
    x = 257,445,509,999.41/579,846.81
  6. Step 6: Final answer
    x = 443,988.84

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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.