Finding the Fourth Proportional to 1,127,821.44, 1,691,831.63 and 318,212.94
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Solution
The fourth proportional to 1,127,821.44, 1,691,831.63 and 318,212.94 is: 477,347.47
Step by Step Solution
- Step 1: Write the proportion equation
1,127,821.44 : 1,691,831.63 = 318,212.94 : x - Step 2: Convert to fraction form
1,127,821.44/1,691,831.63 = 318,212.94/x - Step 3: Cross multiply
1,127,821.44x = 1,691,831.63 × 318,212.94 - Step 4: Simplify right side
1,127,821.44x = 538,362,715,376.23 - Step 5: Solve for x
x = 538,362,715,376.23/1,127,821.44 - Step 6: Final answer
x = 477,347.47
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1.5x scale
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.