Finding the Fourth Proportional to 1,319,857.10, 1,821,403.97 and 716,245.10
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Solution
The fourth proportional to 1,319,857.10, 1,821,403.97 and 716,245.10 is: 988,418.87
Step by Step Solution
- Step 1: Write the proportion equation
1,319,857.10 : 1,821,403.97 = 716,245.10 : x - Step 2: Convert to fraction form
1,319,857.10/1,821,403.97 = 716,245.10/x - Step 3: Cross multiply
1,319,857.10x = 1,821,403.97 × 716,245.10 - Step 4: Simplify right side
1,319,857.10x = 1,304,571,655,944.80 - Step 5: Solve for x
x = 1,304,571,655,944.80/1,319,857.10 - Step 6: Final answer
x = 988,418.87
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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.