Finding the Fourth Proportional to 1,203,979.23, 1,661,427.84 and 687,631.62
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Solution
The fourth proportional to 1,203,979.23, 1,661,427.84 and 687,631.62 is: 948,895.37
Step by Step Solution
- Step 1: Write the proportion equation
1,203,979.23 : 1,661,427.84 = 687,631.62 : x - Step 2: Convert to fraction form
1,203,979.23/1,661,427.84 = 687,631.62/x - Step 3: Cross multiply
1,203,979.23x = 1,661,427.84 × 687,631.62 - Step 4: Simplify right side
1,203,979.23x = 1,142,450,317,132.30 - Step 5: Solve for x
x = 1,142,450,317,132.30/1,203,979.23 - Step 6: Final answer
x = 948,895.37
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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.