Finding the Fourth Proportional to 719,348.40, 992,724.84 and 392,680.80
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Solution
The fourth proportional to 719,348.40, 992,724.84 and 392,680.80 is: 541,912.63
Step by Step Solution
- Step 1: Write the proportion equation
719,348.40 : 992,724.84 = 392,680.80 : x - Step 2: Convert to fraction form
719,348.40/992,724.84 = 392,680.80/x - Step 3: Cross multiply
719,348.40x = 992,724.84 × 392,680.80 - Step 4: Simplify right side
719,348.40x = 389,823,984,351.07 - Step 5: Solve for x
x = 389,823,984,351.07/719,348.40 - Step 6: Final answer
x = 541,912.63
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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.