Finding the Fourth Proportional to 628,042.96, 866,680.74 and 356,135.68
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Solution
The fourth proportional to 628,042.96, 866,680.74 and 356,135.68 is: 491,456.72
Step by Step Solution
- Step 1: Write the proportion equation
628,042.96 : 866,680.74 = 356,135.68 : x - Step 2: Convert to fraction form
628,042.96/866,680.74 = 356,135.68/x - Step 3: Cross multiply
628,042.96x = 866,680.74 × 356,135.68 - Step 4: Simplify right side
628,042.96x = 308,655,934,682.80 - Step 5: Solve for x
x = 308,655,934,682.80/628,042.96 - Step 6: Final answer
x = 491,456.72
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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.