Finding the Fourth Proportional to 880,805.70, 1,321,208.55 and 408,413.70
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Solution
The fourth proportional to 880,805.70, 1,321,208.55 and 408,413.70 is: 612,620.55
Step by Step Solution
- Step 1: Write the proportion equation
880,805.70 : 1,321,208.55 = 408,413.70 : x - Step 2: Convert to fraction form
880,805.70/1,321,208.55 = 408,413.70/x - Step 3: Cross multiply
880,805.70x = 1,321,208.55 × 408,413.70 - Step 4: Simplify right side
880,805.70x = 539,599,672,377.14 - Step 5: Solve for x
x = 539,599,672,377.14/880,805.70 - Step 6: Final answer
x = 612,620.55
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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.