Finding the Fourth Proportional to 642,115.36, 886,126.26 and 355,639.96
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Solution
The fourth proportional to 642,115.36, 886,126.26 and 355,639.96 is: 490,787.06
Step by Step Solution
- Step 1: Write the proportion equation
642,115.36 : 886,126.26 = 355,639.96 : x - Step 2: Convert to fraction form
642,115.36/886,126.26 = 355,639.96/x - Step 3: Cross multiply
642,115.36x = 886,126.26 × 355,639.96 - Step 4: Simplify right side
642,115.36x = 315,141,907,661.35 - Step 5: Solve for x
x = 315,141,907,661.35/642,115.36 - Step 6: Final answer
x = 490,787.06
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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.