Finding the Fourth Proportional to 1,427,779.25, 2,140,979.97 and 828,891.17
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Solution
The fourth proportional to 1,427,779.25, 2,140,979.97 and 828,891.17 is: 1,242,936.81
Step by Step Solution
- Step 1: Write the proportion equation
1,427,779.25 : 2,140,979.97 = 828,891.17 : x - Step 2: Convert to fraction form
1,427,779.25/2,140,979.97 = 828,891.17/x - Step 3: Cross multiply
1,427,779.25x = 2,140,979.97 × 828,891.17 - Step 4: Simplify right side
1,427,779.25x = 1,774,639,381,574.97 - Step 5: Solve for x
x = 1,774,639,381,574.97/1,427,779.25 - Step 6: Final answer
x = 1,242,936.81
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.