Home / 871,788.80-1,203,069.60-489,815.36

Finding the Fourth Proportional to 871,788.80, 1,203,069.60 and 489,815.36

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Solution

The fourth proportional to 871,788.80, 1,203,069.60 and 489,815.36 is: 675,945.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,788.80 : 1,203,069.60 = 489,815.36 : x
  2. Step 2: Convert to fraction form
    871,788.80/1,203,069.60 = 489,815.36/x
  3. Step 3: Cross multiply
    871,788.80x = 1,203,069.60 × 489,815.36
  4. Step 4: Simplify right side
    871,788.80x = 589,281,969,229.06
  5. Step 5: Solve for x
    x = 589,281,969,229.06/871,788.80
  6. Step 6: Final answer
    x = 675,945.79

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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.