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Finding the Fourth Proportional to 458,548.06, 687,821.41 and 300,739.54

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Solution

The fourth proportional to 458,548.06, 687,821.41 and 300,739.54 is: 451,108.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,548.06 : 687,821.41 = 300,739.54 : x
  2. Step 2: Convert to fraction form
    458,548.06/687,821.41 = 300,739.54/x
  3. Step 3: Cross multiply
    458,548.06x = 687,821.41 × 300,739.54
  4. Step 4: Simplify right side
    458,548.06x = 206,855,089,502.75
  5. Step 5: Solve for x
    x = 206,855,089,502.75/458,548.06
  6. Step 6: Final answer
    x = 451,108.86

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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.