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Finding the Fourth Proportional to 579,962.63, 800,346.79 and 321,878.54

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Solution

The fourth proportional to 579,962.63, 800,346.79 and 321,878.54 is: 444,191.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,962.63 : 800,346.79 = 321,878.54 : x
  2. Step 2: Convert to fraction form
    579,962.63/800,346.79 = 321,878.54/x
  3. Step 3: Cross multiply
    579,962.63x = 800,346.79 × 321,878.54
  4. Step 4: Simplify right side
    579,962.63x = 257,614,451,452.46
  5. Step 5: Solve for x
    x = 257,614,451,452.46/579,962.63
  6. Step 6: Final answer
    x = 444,191.47

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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.