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Finding the Fourth Proportional to 620,975.32, 930,793.55 and 300,449.97

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Solution

The fourth proportional to 620,975.32, 930,793.55 and 300,449.97 is: 450,351.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,975.32 : 930,793.55 = 300,449.97 : x
  2. Step 2: Convert to fraction form
    620,975.32/930,793.55 = 300,449.97/x
  3. Step 3: Cross multiply
    620,975.32x = 930,793.55 × 300,449.97
  4. Step 4: Simplify right side
    620,975.32x = 279,656,892,671.44
  5. Step 5: Solve for x
    x = 279,656,892,671.44/620,975.32
  6. Step 6: Final answer
    x = 450,351.06

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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.