Finding the Fourth Proportional to 1,638,678.36, 2,261,154.36 and 913,491.03
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Solution
The fourth proportional to 1,638,678.36, 2,261,154.36 and 913,491.03 is: 1,260,493.99
Step by Step Solution
- Step 1: Write the proportion equation
1,638,678.36 : 2,261,154.36 = 913,491.03 : x - Step 2: Convert to fraction form
1,638,678.36/2,261,154.36 = 913,491.03/x - Step 3: Cross multiply
1,638,678.36x = 2,261,154.36 × 913,491.03 - Step 4: Simplify right side
1,638,678.36x = 2,065,544,225,305.39 - Step 5: Solve for x
x = 2,065,544,225,305.39/1,638,678.36 - Step 6: Final answer
x = 1,260,493.99
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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.