Home / 820,295.64-1,230,435.78-259,330.20

Finding the Fourth Proportional to 820,295.64, 1,230,435.78 and 259,330.20

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Solution

The fourth proportional to 820,295.64, 1,230,435.78 and 259,330.20 is: 388,992.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,295.64 : 1,230,435.78 = 259,330.20 : x
  2. Step 2: Convert to fraction form
    820,295.64/1,230,435.78 = 259,330.20/x
  3. Step 3: Cross multiply
    820,295.64x = 1,230,435.78 × 259,330.20
  4. Step 4: Simplify right side
    820,295.64x = 319,089,156,914.56
  5. Step 5: Solve for x
    x = 319,089,156,914.56/820,295.64
  6. Step 6: Final answer
    x = 388,992.87

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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.