Finding the Fourth Proportional to 462,654.20, 638,623.58 and 317,939.18
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Solution
The fourth proportional to 462,654.20, 638,623.58 and 317,939.18 is: 438,866.55
Step by Step Solution
- Step 1: Write the proportion equation
462,654.20 : 638,623.58 = 317,939.18 : x - Step 2: Convert to fraction form
462,654.20/638,623.58 = 317,939.18/x - Step 3: Cross multiply
462,654.20x = 638,623.58 × 317,939.18 - Step 4: Simplify right side
462,654.20x = 203,043,452,571.05 - Step 5: Solve for x
x = 203,043,452,571.05/462,654.20 - Step 6: Final answer
x = 438,866.55
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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.