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Finding the Fourth Proportional to 579,699.38, 800,027.69 and 321,616.98

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Solution

The fourth proportional to 579,699.38, 800,027.69 and 321,616.98 is: 443,855.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,699.38 : 800,027.69 = 321,616.98 : x
  2. Step 2: Convert to fraction form
    579,699.38/800,027.69 = 321,616.98/x
  3. Step 3: Cross multiply
    579,699.38x = 800,027.69 × 321,616.98
  4. Step 4: Simplify right side
    579,699.38x = 257,302,487,966.09
  5. Step 5: Solve for x
    x = 257,302,487,966.09/579,699.38
  6. Step 6: Final answer
    x = 443,855.03

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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.