Finding the Fourth Proportional to 1,129,539.74, 1,558,757.82 and 646,112.96
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Solution
The fourth proportional to 1,129,539.74, 1,558,757.82 and 646,112.96 is: 891,631.87
Step by Step Solution
- Step 1: Write the proportion equation
1,129,539.74 : 1,558,757.82 = 646,112.96 : x - Step 2: Convert to fraction form
1,129,539.74/1,558,757.82 = 646,112.96/x - Step 3: Cross multiply
1,129,539.74x = 1,558,757.82 × 646,112.96 - Step 4: Simplify right side
1,129,539.74x = 1,007,133,621,209.56 - Step 5: Solve for x
x = 1,007,133,621,209.56/1,129,539.74 - Step 6: Final answer
x = 891,631.87
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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.