Finding the Fourth Proportional to 1,515,386.88, 2,086,459.97 and 1,285,467.57
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Solution
The fourth proportional to 1,515,386.88, 2,086,459.97 and 1,285,467.57 is: 1,769,895.63
Step by Step Solution
- Step 1: Write the proportion equation
1,515,386.88 : 2,086,459.97 = 1,285,467.57 : x - Step 2: Convert to fraction form
1,515,386.88/2,086,459.97 = 1,285,467.57/x - Step 3: Cross multiply
1,515,386.88x = 2,086,459.97 × 1,285,467.57 - Step 4: Simplify right side
1,515,386.88x = 2,682,076,621,110.84 - Step 5: Solve for x
x = 2,682,076,621,110.84/1,515,386.88 - Step 6: Final answer
x = 1,769,895.63
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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.