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Finding the Fourth Proportional to 605,428.43, 835,495.47 and 347,316.64

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Solution

The fourth proportional to 605,428.43, 835,495.47 and 347,316.64 is: 479,299.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,428.43 : 835,495.47 = 347,316.64 : x
  2. Step 2: Convert to fraction form
    605,428.43/835,495.47 = 347,316.64/x
  3. Step 3: Cross multiply
    605,428.43x = 835,495.47 × 347,316.64
  4. Step 4: Simplify right side
    605,428.43x = 290,181,477,286.88
  5. Step 5: Solve for x
    x = 290,181,477,286.88/605,428.43
  6. Step 6: Final answer
    x = 479,299.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.