Finding the Fourth Proportional to 633,970.40, 874,968.75 and 392,330.79
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Solution
The fourth proportional to 633,970.40, 874,968.75 and 392,330.79 is: 541,471.94
Step by Step Solution
- Step 1: Write the proportion equation
633,970.40 : 874,968.75 = 392,330.79 : x - Step 2: Convert to fraction form
633,970.40/874,968.75 = 392,330.79/x - Step 3: Cross multiply
633,970.40x = 874,968.75 × 392,330.79 - Step 4: Simplify right side
633,970.40x = 343,277,180,912.81 - Step 5: Solve for x
x = 343,277,180,912.81/633,970.40 - Step 6: Final answer
x = 541,471.94
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1.5x scale
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.