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Finding the Fourth Proportional to 405,907.29, 606,371.95 and 292,620.69

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Solution

The fourth proportional to 405,907.29, 606,371.95 and 292,620.69 is: 437,136.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,907.29 : 606,371.95 = 292,620.69 : x
  2. Step 2: Convert to fraction form
    405,907.29/606,371.95 = 292,620.69/x
  3. Step 3: Cross multiply
    405,907.29x = 606,371.95 × 292,620.69
  4. Step 4: Simplify right side
    405,907.29x = 177,436,978,405.65
  5. Step 5: Solve for x
    x = 177,436,978,405.65/405,907.29
  6. Step 6: Final answer
    x = 437,136.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.