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Finding the Fourth Proportional to 579,945.02, 800,322.45 and 321,860.91

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Solution

The fourth proportional to 579,945.02, 800,322.45 and 321,860.91 is: 444,167.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,945.02 : 800,322.45 = 321,860.91 : x
  2. Step 2: Convert to fraction form
    579,945.02/800,322.45 = 321,860.91/x
  3. Step 3: Cross multiply
    579,945.02x = 800,322.45 × 321,860.91
  4. Step 4: Simplify right side
    579,945.02x = 257,592,512,050.43
  5. Step 5: Solve for x
    x = 257,592,512,050.43/579,945.02
  6. Step 6: Final answer
    x = 444,167.13

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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.