Finding the Fourth Proportional to 5,707,218.42, 7,875,959.40 and 3,128,843.88
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Solution
The fourth proportional to 5,707,218.42, 7,875,959.40 and 3,128,843.88 is: 4,317,803.45
Step by Step Solution
- Step 1: Write the proportion equation
5,707,218.42 : 7,875,959.40 = 3,128,843.88 : x - Step 2: Convert to fraction form
5,707,218.42/7,875,959.40 = 3,128,843.88/x - Step 3: Cross multiply
5,707,218.42x = 7,875,959.40 × 3,128,843.88 - Step 4: Simplify right side
5,707,218.42x = 24,642,647,367,818.47 - Step 5: Solve for x
x = 24,642,647,367,818.47/5,707,218.42 - Step 6: Final answer
x = 4,317,803.45
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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.