Finding the Fourth Proportional to 1,979,661.75, 2,731,904.05 and 1,163,957.19
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Solution
The fourth proportional to 1,979,661.75, 2,731,904.05 and 1,163,957.19 is: 1,606,243.77
Step by Step Solution
- Step 1: Write the proportion equation
1,979,661.75 : 2,731,904.05 = 1,163,957.19 : x - Step 2: Convert to fraction form
1,979,661.75/2,731,904.05 = 1,163,957.19/x - Step 3: Cross multiply
1,979,661.75x = 2,731,904.05 × 1,163,957.19 - Step 4: Simplify right side
1,979,661.75x = 3,179,819,361,387.62 - Step 5: Solve for x
x = 3,179,819,361,387.62/1,979,661.75 - Step 6: Final answer
x = 1,606,243.77
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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.