Finding the Fourth Proportional to 1,643,559.87, 2,268,069.11 and 918,413.55
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Solution
The fourth proportional to 1,643,559.87, 2,268,069.11 and 918,413.55 is: 1,267,386.38
Step by Step Solution
- Step 1: Write the proportion equation
1,643,559.87 : 2,268,069.11 = 918,413.55 : x - Step 2: Convert to fraction form
1,643,559.87/2,268,069.11 = 918,413.55/x - Step 3: Cross multiply
1,643,559.87x = 2,268,069.11 × 918,413.55 - Step 4: Simplify right side
1,643,559.87x = 2,083,025,391,620.10 - Step 5: Solve for x
x = 2,083,025,391,620.10/1,643,559.87 - Step 6: Final answer
x = 1,267,386.38
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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.