Finding the Fourth Proportional to 1,319,751.75, 1,821,262.28 and 716,139.75
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Solution
The fourth proportional to 1,319,751.75, 1,821,262.28 and 716,139.75 is: 988,275.49
Step by Step Solution
- Step 1: Write the proportion equation
1,319,751.75 : 1,821,262.28 = 716,139.75 : x - Step 2: Convert to fraction form
1,319,751.75/1,821,262.28 = 716,139.75/x - Step 3: Cross multiply
1,319,751.75x = 1,821,262.28 × 716,139.75 - Step 4: Simplify right side
1,319,751.75x = 1,304,278,310,302.93 - Step 5: Solve for x
x = 1,304,278,310,302.93/1,319,751.75 - Step 6: Final answer
x = 988,275.49
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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.