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Finding the Fourth Proportional to 579,129.35, 799,228.22 and 321,033.78

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Solution

The fourth proportional to 579,129.35, 799,228.22 and 321,033.78 is: 443,043.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,129.35 : 799,228.22 = 321,033.78 : x
  2. Step 2: Convert to fraction form
    579,129.35/799,228.22 = 321,033.78/x
  3. Step 3: Cross multiply
    579,129.35x = 799,228.22 × 321,033.78
  4. Step 4: Simplify right side
    579,129.35x = 256,579,254,944.10
  5. Step 5: Solve for x
    x = 256,579,254,944.10/579,129.35
  6. Step 6: Final answer
    x = 443,043.09

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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.