Finding the Fourth Proportional to 5,181,031.52, 7,772,198.32 and 2,781,578.08
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Solution
The fourth proportional to 5,181,031.52, 7,772,198.32 and 2,781,578.08 is: 4,172,716.65
Step by Step Solution
- Step 1: Write the proportion equation
5,181,031.52 : 7,772,198.32 = 2,781,578.08 : x - Step 2: Convert to fraction form
5,181,031.52/7,772,198.32 = 2,781,578.08/x - Step 3: Cross multiply
5,181,031.52x = 7,772,198.32 × 2,781,578.08 - Step 4: Simplify right side
5,181,031.52x = 21,618,976,480,324.83 - Step 5: Solve for x
x = 21,618,976,480,324.83/5,181,031.52 - Step 6: Final answer
x = 4,172,716.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.