Finding the Fourth Proportional to 1,139,056.44, 1,571,878.62 and 812,969.88
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Solution
The fourth proportional to 1,139,056.44, 1,571,878.62 and 812,969.88 is: 1,121,884.68
Step by Step Solution
- Step 1: Write the proportion equation
1,139,056.44 : 1,571,878.62 = 812,969.88 : x - Step 2: Convert to fraction form
1,139,056.44/1,571,878.62 = 812,969.88/x - Step 3: Cross multiply
1,139,056.44x = 1,571,878.62 × 812,969.88 - Step 4: Simplify right side
1,139,056.44x = 1,277,889,973,075.97 - Step 5: Solve for x
x = 1,277,889,973,075.97/1,139,056.44 - Step 6: Final answer
x = 1,121,884.68
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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.