Finding the Fourth Proportional to 699,615.74, 965,395.26 and 393,686.79
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Solution
The fourth proportional to 699,615.74, 965,395.26 and 393,686.79 is: 543,245.87
Step by Step Solution
- Step 1: Write the proportion equation
699,615.74 : 965,395.26 = 393,686.79 : x - Step 2: Convert to fraction form
699,615.74/965,395.26 = 393,686.79/x - Step 3: Cross multiply
699,615.74x = 965,395.26 × 393,686.79 - Step 4: Simplify right side
699,615.74x = 380,063,360,990.62 - Step 5: Solve for x
x = 380,063,360,990.62/699,615.74 - Step 6: Final answer
x = 543,245.87
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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.