Finding the Fourth Proportional to 714,627.93, 986,188.26 and 392,358.80
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Solution
The fourth proportional to 714,627.93, 986,188.26 and 392,358.80 is: 541,456.09
Step by Step Solution
- Step 1: Write the proportion equation
714,627.93 : 986,188.26 = 392,358.80 : x - Step 2: Convert to fraction form
714,627.93/986,188.26 = 392,358.80/x - Step 3: Cross multiply
714,627.93x = 986,188.26 × 392,358.80 - Step 4: Simplify right side
714,627.93x = 386,939,642,267.69 - Step 5: Solve for x
x = 386,939,642,267.69/714,627.93 - Step 6: Final answer
x = 541,456.09
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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.