Finding the Fourth Proportional to 1,129,505.75, 1,558,728.87 and 620,219.06
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Solution
The fourth proportional to 1,129,505.75, 1,558,728.87 and 620,219.06 is: 855,908.31
Step by Step Solution
- Step 1: Write the proportion equation
1,129,505.75 : 1,558,728.87 = 620,219.06 : x - Step 2: Convert to fraction form
1,129,505.75/1,558,728.87 = 620,219.06/x - Step 3: Cross multiply
1,129,505.75x = 1,558,728.87 × 620,219.06 - Step 4: Simplify right side
1,129,505.75x = 966,753,354,546.26 - Step 5: Solve for x
x = 966,753,354,546.26/1,129,505.75 - Step 6: Final answer
x = 855,908.31
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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.