Home / 789,239.34-1,088,883.78-449,467.02

Finding the Fourth Proportional to 789,239.34, 1,088,883.78 and 449,467.02

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Solution

The fourth proportional to 789,239.34, 1,088,883.78 and 449,467.02 is: 620,112.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,239.34 : 1,088,883.78 = 449,467.02 : x
  2. Step 2: Convert to fraction form
    789,239.34/1,088,883.78 = 449,467.02/x
  3. Step 3: Cross multiply
    789,239.34x = 1,088,883.78 × 449,467.02
  4. Step 4: Simplify right side
    789,239.34x = 489,417,347,722.94
  5. Step 5: Solve for x
    x = 489,417,347,722.94/789,239.34
  6. Step 6: Final answer
    x = 620,112.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.