Finding the Fourth Proportional to 779,838.12, 1,076,176.80 and 422,142.12
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Solution
The fourth proportional to 779,838.12, 1,076,176.80 and 422,142.12 is: 582,556.23
Step by Step Solution
- Step 1: Write the proportion equation
779,838.12 : 1,076,176.80 = 422,142.12 : x - Step 2: Convert to fraction form
779,838.12/1,076,176.80 = 422,142.12/x - Step 3: Cross multiply
779,838.12x = 1,076,176.80 × 422,142.12 - Step 4: Simplify right side
779,838.12x = 454,299,555,846.82 - Step 5: Solve for x
x = 454,299,555,846.82/779,838.12 - Step 6: Final answer
x = 582,556.23
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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.