Finding the Fourth Proportional to 1,390,452.36, 1,917,832.97 and 1,276,099.62
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Solution
The fourth proportional to 1,390,452.36, 1,917,832.97 and 1,276,099.62 is: 1,760,107.72
Step by Step Solution
- Step 1: Write the proportion equation
1,390,452.36 : 1,917,832.97 = 1,276,099.62 : x - Step 2: Convert to fraction form
1,390,452.36/1,917,832.97 = 1,276,099.62/x - Step 3: Cross multiply
1,390,452.36x = 1,917,832.97 × 1,276,099.62 - Step 4: Simplify right side
1,390,452.36x = 2,447,345,927,430.72 - Step 5: Solve for x
x = 2,447,345,927,430.72/1,390,452.36 - Step 6: Final answer
x = 1,760,107.72
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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.