Finding the Fourth Proportional to 1,319,821.12, 1,821,357.92 and 716,208.96
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Solution
The fourth proportional to 1,319,821.12, 1,821,357.92 and 716,208.96 is: 988,370.96
Step by Step Solution
- Step 1: Write the proportion equation
1,319,821.12 : 1,821,357.92 = 716,208.96 : x - Step 2: Convert to fraction form
1,319,821.12/1,821,357.92 = 716,208.96/x - Step 3: Cross multiply
1,319,821.12x = 1,821,357.92 × 716,208.96 - Step 4: Simplify right side
1,319,821.12x = 1,304,472,861,670.96 - Step 5: Solve for x
x = 1,304,472,861,670.96/1,319,821.12 - Step 6: Final answer
x = 988,370.96
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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.