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Finding the Fourth Proportional to 579,670.67, 799,991.96 and 321,573.08

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Solution

The fourth proportional to 579,670.67, 799,991.96 and 321,573.08 is: 443,796.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,670.67 : 799,991.96 = 321,573.08 : x
  2. Step 2: Convert to fraction form
    579,670.67/799,991.96 = 321,573.08/x
  3. Step 3: Cross multiply
    579,670.67x = 799,991.96 × 321,573.08
  4. Step 4: Simplify right side
    579,670.67x = 257,255,872,944.61
  5. Step 5: Solve for x
    x = 257,255,872,944.61/579,670.67
  6. Step 6: Final answer
    x = 443,796.60

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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.