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Finding the Fourth Proportional to 618,071.20, 926,415.60 and 263,024.80

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Solution

The fourth proportional to 618,071.20, 926,415.60 and 263,024.80 is: 394,243.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,071.20 : 926,415.60 = 263,024.80 : x
  2. Step 2: Convert to fraction form
    618,071.20/926,415.60 = 263,024.80/x
  3. Step 3: Cross multiply
    618,071.20x = 926,415.60 × 263,024.80
  4. Step 4: Simplify right side
    618,071.20x = 243,670,277,906.88
  5. Step 5: Solve for x
    x = 243,670,277,906.88/618,071.20
  6. Step 6: Final answer
    x = 394,243.05

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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.