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Finding the Fourth Proportional to 821,349, 1,232,515.02 and 354,405

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Solution

The fourth proportional to 821,349, 1,232,515.02 and 354,405 is: 531,819.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,349 : 1,232,515.02 = 354,405 : x
  2. Step 2: Convert to fraction form
    821,349/1,232,515.02 = 354,405/x
  3. Step 3: Cross multiply
    821,349x = 1,232,515.02 × 354,405
  4. Step 4: Simplify right side
    821,349x = 436,809,485,663.10
  5. Step 5: Solve for x
    x = 436,809,485,663.10/821,349
  6. Step 6: Final answer
    x = 531,819.59

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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.