Home / 815,413.80-1,223,120.30-254,448.30

Finding the Fourth Proportional to 815,413.80, 1,223,120.30 and 254,448.30

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Solution

The fourth proportional to 815,413.80, 1,223,120.30 and 254,448.30 is: 381,672.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,413.80 : 1,223,120.30 = 254,448.30 : x
  2. Step 2: Convert to fraction form
    815,413.80/1,223,120.30 = 254,448.30/x
  3. Step 3: Cross multiply
    815,413.80x = 1,223,120.30 × 254,448.30
  4. Step 4: Simplify right side
    815,413.80x = 311,220,879,758.25
  5. Step 5: Solve for x
    x = 311,220,879,758.25/815,413.80
  6. Step 6: Final answer
    x = 381,672.32

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Double scale
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1.5x scale

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.