Finding the Fourth Proportional to 1,605,101.20, 2,215,321.06 and 1,219,193.98
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Solution
The fourth proportional to 1,605,101.20, 2,215,321.06 and 1,219,193.98 is: 1,682,701.44
Step by Step Solution
- Step 1: Write the proportion equation
1,605,101.20 : 2,215,321.06 = 1,219,193.98 : x - Step 2: Convert to fraction form
1,605,101.20/2,215,321.06 = 1,219,193.98/x - Step 3: Cross multiply
1,605,101.20x = 2,215,321.06 × 1,219,193.98 - Step 4: Simplify right side
1,605,101.20x = 2,700,906,100,119.22 - Step 5: Solve for x
x = 2,700,906,100,119.22/1,605,101.20 - Step 6: Final answer
x = 1,682,701.44
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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.