Finding the Fourth Proportional to 1,557,142.68, 2,148,857.10 and 878,079.36
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Solution
The fourth proportional to 1,557,142.68, 2,148,857.10 and 878,079.36 is: 1,211,749.63
Step by Step Solution
- Step 1: Write the proportion equation
1,557,142.68 : 2,148,857.10 = 878,079.36 : x - Step 2: Convert to fraction form
1,557,142.68/2,148,857.10 = 878,079.36/x - Step 3: Cross multiply
1,557,142.68x = 2,148,857.10 × 878,079.36 - Step 4: Simplify right side
1,557,142.68x = 1,886,867,067,099.46 - Step 5: Solve for x
x = 1,886,867,067,099.46/1,557,142.68 - Step 6: Final answer
x = 1,211,749.63
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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.