Finding the Fourth Proportional to 1,319,769.12, 1,821,286.08 and 716,157.12
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Solution
The fourth proportional to 1,319,769.12, 1,821,286.08 and 716,157.12 is: 988,299.37
Step by Step Solution
- Step 1: Write the proportion equation
1,319,769.12 : 1,821,286.08 = 716,157.12 : x - Step 2: Convert to fraction form
1,319,769.12/1,821,286.08 = 716,157.12/x - Step 3: Cross multiply
1,319,769.12x = 1,821,286.08 × 716,157.12 - Step 4: Simplify right side
1,319,769.12x = 1,304,326,993,748.89 - Step 5: Solve for x
x = 1,304,326,993,748.89/1,319,769.12 - Step 6: Final answer
x = 988,299.37
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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.