Finding the Fourth Proportional to 1,292,022.12, 1,782,990.54 and 719,197.62
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Solution
The fourth proportional to 1,292,022.12, 1,782,990.54 and 719,197.62 is: 992,492.72
Step by Step Solution
- Step 1: Write the proportion equation
1,292,022.12 : 1,782,990.54 = 719,197.62 : x - Step 2: Convert to fraction form
1,292,022.12/1,782,990.54 = 719,197.62/x - Step 3: Cross multiply
1,292,022.12x = 1,782,990.54 × 719,197.62 - Step 4: Simplify right side
1,292,022.12x = 1,282,322,552,850.51 - Step 5: Solve for x
x = 1,282,322,552,850.51/1,292,022.12 - Step 6: Final answer
x = 992,492.72
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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.