Finding the Fourth Proportional to 1,238,538.47, 1,857,361.99 and 428,702.85
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Solution
The fourth proportional to 1,238,538.47, 1,857,361.99 and 428,702.85 is: 642,899.99
Step by Step Solution
- Step 1: Write the proportion equation
1,238,538.47 : 1,857,361.99 = 428,702.85 : x - Step 2: Convert to fraction form
1,238,538.47/1,857,361.99 = 428,702.85/x - Step 3: Cross multiply
1,238,538.47x = 1,857,361.99 × 428,702.85 - Step 4: Simplify right side
1,238,538.47x = 796,256,367,164.35 - Step 5: Solve for x
x = 796,256,367,164.35/1,238,538.47 - Step 6: Final answer
x = 642,899.99
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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.