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Finding the Fourth Proportional to 654,991.76, 903,879.37 and 368,511.17

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Solution

The fourth proportional to 654,991.76, 903,879.37 and 368,511.17 is: 508,540.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,991.76 : 903,879.37 = 368,511.17 : x
  2. Step 2: Convert to fraction form
    654,991.76/903,879.37 = 368,511.17/x
  3. Step 3: Cross multiply
    654,991.76x = 903,879.37 × 368,511.17
  4. Step 4: Simplify right side
    654,991.76x = 333,089,638,736.89
  5. Step 5: Solve for x
    x = 333,089,638,736.89/654,991.76
  6. Step 6: Final answer
    x = 508,540.20

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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.