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Finding the Fourth Proportional to 579,690.88, 799,972.67 and 321,606.96

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Solution

The fourth proportional to 579,690.88, 799,972.67 and 321,606.96 is: 443,817.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,690.88 : 799,972.67 = 321,606.96 : x
  2. Step 2: Convert to fraction form
    579,690.88/799,972.67 = 321,606.96/x
  3. Step 3: Cross multiply
    579,690.88x = 799,972.67 × 321,606.96
  4. Step 4: Simplify right side
    579,690.88x = 257,276,776,325.09
  5. Step 5: Solve for x
    x = 257,276,776,325.09/579,690.88
  6. Step 6: Final answer
    x = 443,817.19

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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.