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Finding the Fourth Proportional to 579,917.84, 800,290.90 and 321,795.80

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Solution

The fourth proportional to 579,917.84, 800,290.90 and 321,795.80 is: 444,080.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,917.84 : 800,290.90 = 321,795.80 : x
  2. Step 2: Convert to fraction form
    579,917.84/800,290.90 = 321,795.80/x
  3. Step 3: Cross multiply
    579,917.84x = 800,290.90 × 321,795.80
  4. Step 4: Simplify right side
    579,917.84x = 257,530,250,398.22
  5. Step 5: Solve for x
    x = 257,530,250,398.22/579,917.84
  6. Step 6: Final answer
    x = 444,080.58

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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.