Finding the Fourth Proportional to 638,644.08, 881,335.80 and 352,174.44
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Solution
The fourth proportional to 638,644.08, 881,335.80 and 352,174.44 is: 486,004.57
Step by Step Solution
- Step 1: Write the proportion equation
638,644.08 : 881,335.80 = 352,174.44 : x - Step 2: Convert to fraction form
638,644.08/881,335.80 = 352,174.44/x - Step 3: Cross multiply
638,644.08x = 881,335.80 × 352,174.44 - Step 4: Simplify right side
638,644.08x = 310,383,941,816.95 - Step 5: Solve for x
x = 310,383,941,816.95/638,644.08 - Step 6: Final answer
x = 486,004.57
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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.