Home / 871,843.20-1,203,179.04-489,868.80

Finding the Fourth Proportional to 871,843.20, 1,203,179.04 and 489,868.80

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Solution

The fourth proportional to 871,843.20, 1,203,179.04 and 489,868.80 is: 676,038.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,843.20 : 1,203,179.04 = 489,868.80 : x
  2. Step 2: Convert to fraction form
    871,843.20/1,203,179.04 = 489,868.80/x
  3. Step 3: Cross multiply
    871,843.20x = 1,203,179.04 × 489,868.80
  4. Step 4: Simplify right side
    871,843.20x = 589,399,872,509.95
  5. Step 5: Solve for x
    x = 589,399,872,509.95/871,843.20
  6. Step 6: Final answer
    x = 676,038.85

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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.