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Finding the Fourth Proportional to 664,574.96, 996,814.08 and 259,691.33

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Solution

The fourth proportional to 664,574.96, 996,814.08 and 259,691.33 is: 389,518.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,574.96 : 996,814.08 = 259,691.33 : x
  2. Step 2: Convert to fraction form
    664,574.96/996,814.08 = 259,691.33/x
  3. Step 3: Cross multiply
    664,574.96x = 996,814.08 × 259,691.33
  4. Step 4: Simplify right side
    664,574.96x = 258,863,976,689.96
  5. Step 5: Solve for x
    x = 258,863,976,689.96/664,574.96
  6. Step 6: Final answer
    x = 389,518.10

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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.