Finding the Fourth Proportional to 1,289,382.72, 1,778,606.88 and 805,107.12
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Solution
The fourth proportional to 1,289,382.72, 1,778,606.88 and 805,107.12 is: 1,110,584.96
Step by Step Solution
- Step 1: Write the proportion equation
1,289,382.72 : 1,778,606.88 = 805,107.12 : x - Step 2: Convert to fraction form
1,289,382.72/1,778,606.88 = 805,107.12/x - Step 3: Cross multiply
1,289,382.72x = 1,778,606.88 × 805,107.12 - Step 4: Simplify right side
1,289,382.72x = 1,431,969,062,768.99 - Step 5: Solve for x
x = 1,431,969,062,768.99/1,289,382.72 - Step 6: Final answer
x = 1,110,584.96
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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.