Finding the Fourth Proportional to 521,403.75, 719,537.18 and 282,939.75
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Solution
The fourth proportional to 521,403.75, 719,537.18 and 282,939.75 is: 390,456.86
Step by Step Solution
- Step 1: Write the proportion equation
521,403.75 : 719,537.18 = 282,939.75 : x - Step 2: Convert to fraction form
521,403.75/719,537.18 = 282,939.75/x - Step 3: Cross multiply
521,403.75x = 719,537.18 × 282,939.75 - Step 4: Simplify right side
521,403.75x = 203,585,668,410.21 - Step 5: Solve for x
x = 203,585,668,410.21/521,403.75 - Step 6: Final answer
x = 390,456.86
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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.