Finding the Fourth Proportional to 428,837.18, 642,443.84 and 286,252.53
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Solution
The fourth proportional to 428,837.18, 642,443.84 and 286,252.53 is: 428,836.82
Step by Step Solution
- Step 1: Write the proportion equation
428,837.18 : 642,443.84 = 286,252.53 : x - Step 2: Convert to fraction form
428,837.18/642,443.84 = 286,252.53/x - Step 3: Cross multiply
428,837.18x = 642,443.84 × 286,252.53 - Step 4: Simplify right side
428,837.18x = 183,901,174,582.92 - Step 5: Solve for x
x = 183,901,174,582.92/428,837.18 - Step 6: Final answer
x = 428,836.82
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.