Finding the Fourth Proportional to 1,278,033.42, 1,906,583.86 and 1,243,284.68
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Solution
The fourth proportional to 1,278,033.42, 1,906,583.86 and 1,243,284.68 is: 1,854,745.32
Step by Step Solution
- Step 1: Write the proportion equation
1,278,033.42 : 1,906,583.86 = 1,243,284.68 : x - Step 2: Convert to fraction form
1,278,033.42/1,906,583.86 = 1,243,284.68/x - Step 3: Cross multiply
1,278,033.42x = 1,906,583.86 × 1,243,284.68 - Step 4: Simplify right side
1,278,033.42x = 2,370,426,504,273.26 - Step 5: Solve for x
x = 2,370,426,504,273.26/1,278,033.42 - Step 6: Final answer
x = 1,854,745.32
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.