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Finding the Fourth Proportional to 621,317.49, 930,481.47 and 354,268.41

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Solution

The fourth proportional to 621,317.49, 930,481.47 and 354,268.41 is: 530,550.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,317.49 : 930,481.47 = 354,268.41 : x
  2. Step 2: Convert to fraction form
    621,317.49/930,481.47 = 354,268.41/x
  3. Step 3: Cross multiply
    621,317.49x = 930,481.47 × 354,268.41
  4. Step 4: Simplify right side
    621,317.49x = 329,640,190,911.36
  5. Step 5: Solve for x
    x = 329,640,190,911.36/621,317.49
  6. Step 6: Final answer
    x = 530,550.32

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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.