Home / 480,960.45-721,608.75-300,840.35

Finding the Fourth Proportional to 480,960.45, 721,608.75 and 300,840.35

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Solution

The fourth proportional to 480,960.45, 721,608.75 and 300,840.35 is: 451,365.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,960.45 : 721,608.75 = 300,840.35 : x
  2. Step 2: Convert to fraction form
    480,960.45/721,608.75 = 300,840.35/x
  3. Step 3: Cross multiply
    480,960.45x = 721,608.75 × 300,840.35
  4. Step 4: Simplify right side
    480,960.45x = 217,089,025,305.02
  5. Step 5: Solve for x
    x = 217,089,025,305.02/480,960.45
  6. Step 6: Final answer
    x = 451,365.65

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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.