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Finding the Fourth Proportional to 664,574.21, 996,812.96 and 259,690.58

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Solution

The fourth proportional to 664,574.21, 996,812.96 and 259,690.58 is: 389,516.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,574.21 : 996,812.96 = 259,690.58 : x
  2. Step 2: Convert to fraction form
    664,574.21/996,812.96 = 259,690.58/x
  3. Step 3: Cross multiply
    664,574.21x = 996,812.96 × 259,690.58
  4. Step 4: Simplify right side
    664,574.21x = 258,862,936,927.50
  5. Step 5: Solve for x
    x = 258,862,936,927.50/664,574.21
  6. Step 6: Final answer
    x = 389,516.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.