Finding the Fourth Proportional to 919,140.15, 1,268,382.96 and 511,230.45
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Solution
The fourth proportional to 919,140.15, 1,268,382.96 and 511,230.45 is: 705,481.09
Step by Step Solution
- Step 1: Write the proportion equation
919,140.15 : 1,268,382.96 = 511,230.45 : x - Step 2: Convert to fraction form
919,140.15/1,268,382.96 = 511,230.45/x - Step 3: Cross multiply
919,140.15x = 1,268,382.96 × 511,230.45 - Step 4: Simplify right side
919,140.15x = 648,435,991,413.13 - Step 5: Solve for x
x = 648,435,991,413.13/919,140.15 - Step 6: Final answer
x = 705,481.09
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1.5x scale
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.