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Finding the Fourth Proportional to 579,916.84, 800,289.52 and 321,794.80

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Solution

The fourth proportional to 579,916.84, 800,289.52 and 321,794.80 is: 444,079.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,916.84 : 800,289.52 = 321,794.80 : x
  2. Step 2: Convert to fraction form
    579,916.84/800,289.52 = 321,794.80/x
  3. Step 3: Cross multiply
    579,916.84x = 800,289.52 × 321,794.80
  4. Step 4: Simplify right side
    579,916.84x = 257,529,005,476.10
  5. Step 5: Solve for x
    x = 257,529,005,476.10/579,916.84
  6. Step 6: Final answer
    x = 444,079.20

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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.