Finding the Fourth Proportional to 2,165,173.64, 2,987,917.62 and 1,198,305.80
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Solution
The fourth proportional to 2,165,173.64, 2,987,917.62 and 1,198,305.80 is: 1,653,649.83
Step by Step Solution
- Step 1: Write the proportion equation
2,165,173.64 : 2,987,917.62 = 1,198,305.80 : x - Step 2: Convert to fraction form
2,165,173.64/2,987,917.62 = 1,198,305.80/x - Step 3: Cross multiply
2,165,173.64x = 2,987,917.62 × 1,198,305.80 - Step 4: Simplify right side
2,165,173.64x = 3,580,439,013,968.20 - Step 5: Solve for x
x = 3,580,439,013,968.20/2,165,173.64 - Step 6: Final answer
x = 1,653,649.83
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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.