Finding the Fourth Proportional to 1,186,619.21, 1,779,837.99 and 428,461.03
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Solution
The fourth proportional to 1,186,619.21, 1,779,837.99 and 428,461.03 is: 642,658.75
Step by Step Solution
- Step 1: Write the proportion equation
1,186,619.21 : 1,779,837.99 = 428,461.03 : x - Step 2: Convert to fraction form
1,186,619.21/1,779,837.99 = 428,461.03/x - Step 3: Cross multiply
1,186,619.21x = 1,779,837.99 × 428,461.03 - Step 4: Simplify right side
1,186,619.21x = 762,591,218,428.53 - Step 5: Solve for x
x = 762,591,218,428.53/1,186,619.21 - Step 6: Final answer
x = 642,658.75
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.