Finding the Fourth Proportional to 1,114,717.21, 1,538,779.49 and 752,631.01
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Solution
The fourth proportional to 1,114,717.21, 1,538,779.49 and 752,631.01 is: 1,038,947.95
Step by Step Solution
- Step 1: Write the proportion equation
1,114,717.21 : 1,538,779.49 = 752,631.01 : x - Step 2: Convert to fraction form
1,114,717.21/1,538,779.49 = 752,631.01/x - Step 3: Cross multiply
1,114,717.21x = 1,538,779.49 × 752,631.01 - Step 4: Simplify right side
1,114,717.21x = 1,158,133,157,962.83 - Step 5: Solve for x
x = 1,158,133,157,962.83/1,114,717.21 - Step 6: Final answer
x = 1,038,947.95
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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.