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Finding the Fourth Proportional to 405,012.60, 606,644.10 and 335,028.60

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Solution

The fourth proportional to 405,012.60, 606,644.10 and 335,028.60 is: 501,819.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,012.60 : 606,644.10 = 335,028.60 : x
  2. Step 2: Convert to fraction form
    405,012.60/606,644.10 = 335,028.60/x
  3. Step 3: Cross multiply
    405,012.60x = 606,644.10 × 335,028.60
  4. Step 4: Simplify right side
    405,012.60x = 203,243,123,521.26
  5. Step 5: Solve for x
    x = 203,243,123,521.26/405,012.60
  6. Step 6: Final answer
    x = 501,819.26

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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.