Finding the Fourth Proportional to 1,138,750.12, 1,571,413.80 and 629,422.12
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Solution
The fourth proportional to 1,138,750.12, 1,571,413.80 and 629,422.12 is: 868,568.61
Step by Step Solution
- Step 1: Write the proportion equation
1,138,750.12 : 1,571,413.80 = 629,422.12 : x - Step 2: Convert to fraction form
1,138,750.12/1,571,413.80 = 629,422.12/x - Step 3: Cross multiply
1,138,750.12x = 1,571,413.80 × 629,422.12 - Step 4: Simplify right side
1,138,750.12x = 989,082,605,393.26 - Step 5: Solve for x
x = 989,082,605,393.26/1,138,750.12 - Step 6: Final answer
x = 868,568.61
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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.