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Finding the Fourth Proportional to 668,922.69, 1,003,537.25 and 289,907

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Solution

The fourth proportional to 668,922.69, 1,003,537.25 and 289,907 is: 434,926.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,922.69 : 1,003,537.25 = 289,907 : x
  2. Step 2: Convert to fraction form
    668,922.69/1,003,537.25 = 289,907/x
  3. Step 3: Cross multiply
    668,922.69x = 1,003,537.25 × 289,907
  4. Step 4: Simplify right side
    668,922.69x = 290,932,473,535.75
  5. Step 5: Solve for x
    x = 290,932,473,535.75/668,922.69
  6. Step 6: Final answer
    x = 434,926.90

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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.