Finding the Fourth Proportional to 1,151,618.76, 1,589,236.14 and 642,354.12
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Solution
The fourth proportional to 1,151,618.76, 1,589,236.14 and 642,354.12 is: 886,449.94
Step by Step Solution
- Step 1: Write the proportion equation
1,151,618.76 : 1,589,236.14 = 642,354.12 : x - Step 2: Convert to fraction form
1,151,618.76/1,589,236.14 = 642,354.12/x - Step 3: Cross multiply
1,151,618.76x = 1,589,236.14 × 642,354.12 - Step 4: Simplify right side
1,151,618.76x = 1,020,852,382,181.90 - Step 5: Solve for x
x = 1,020,852,382,181.90/1,151,618.76 - Step 6: Final answer
x = 886,449.94
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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.