Home / 921,888-1,383,065.28-257,040

Finding the Fourth Proportional to 921,888, 1,383,065.28 and 257,040

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Solution

The fourth proportional to 921,888, 1,383,065.28 and 257,040 is: 385,625.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,888 : 1,383,065.28 = 257,040 : x
  2. Step 2: Convert to fraction form
    921,888/1,383,065.28 = 257,040/x
  3. Step 3: Cross multiply
    921,888x = 1,383,065.28 × 257,040
  4. Step 4: Simplify right side
    921,888x = 355,503,099,571.20
  5. Step 5: Solve for x
    x = 355,503,099,571.20/921,888
  6. Step 6: Final answer
    x = 385,625.04

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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.