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Finding the Fourth Proportional to 579,907.58, 800,234 and 321,768.16

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Solution

The fourth proportional to 579,907.58, 800,234 and 321,768.16 is: 444,018.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,907.58 : 800,234 = 321,768.16 : x
  2. Step 2: Convert to fraction form
    579,907.58/800,234 = 321,768.16/x
  3. Step 3: Cross multiply
    579,907.58x = 800,234 × 321,768.16
  4. Step 4: Simplify right side
    579,907.58x = 257,489,821,749.44
  5. Step 5: Solve for x
    x = 257,489,821,749.44/579,907.58
  6. Step 6: Final answer
    x = 444,018.72

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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.