Finding the Fourth Proportional to 1,211,873.49, 1,672,309.04 and 667,979.19
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Solution
The fourth proportional to 1,211,873.49, 1,672,309.04 and 667,979.19 is: 921,769.18
Step by Step Solution
- Step 1: Write the proportion equation
1,211,873.49 : 1,672,309.04 = 667,979.19 : x - Step 2: Convert to fraction form
1,211,873.49/1,672,309.04 = 667,979.19/x - Step 3: Cross multiply
1,211,873.49x = 1,672,309.04 × 667,979.19 - Step 4: Simplify right side
1,211,873.49x = 1,117,067,634,628.98 - Step 5: Solve for x
x = 1,117,067,634,628.98/1,211,873.49 - Step 6: Final answer
x = 921,769.18
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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.