Finding the Fourth Proportional to 1,680,581.19, 2,319,233.55 and 916,662.09
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Solution
The fourth proportional to 1,680,581.19, 2,319,233.55 and 916,662.09 is: 1,265,010.87
Step by Step Solution
- Step 1: Write the proportion equation
1,680,581.19 : 2,319,233.55 = 916,662.09 : x - Step 2: Convert to fraction form
1,680,581.19/2,319,233.55 = 916,662.09/x - Step 3: Cross multiply
1,680,581.19x = 2,319,233.55 × 916,662.09 - Step 4: Simplify right side
1,680,581.19x = 2,125,953,473,141.12 - Step 5: Solve for x
x = 2,125,953,473,141.12/1,680,581.19 - Step 6: Final answer
x = 1,265,010.87
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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.