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Finding the Fourth Proportional to 579,519.08, 799,784.21 and 321,479.22

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Solution

The fourth proportional to 579,519.08, 799,784.21 and 321,479.22 is: 443,667.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,519.08 : 799,784.21 = 321,479.22 : x
  2. Step 2: Convert to fraction form
    579,519.08/799,784.21 = 321,479.22/x
  3. Step 3: Cross multiply
    579,519.08x = 799,784.21 × 321,479.22
  4. Step 4: Simplify right side
    579,519.08x = 257,114,002,391.72
  5. Step 5: Solve for x
    x = 257,114,002,391.72/579,519.08
  6. Step 6: Final answer
    x = 443,667.89

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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.