Finding the Fourth Proportional to 486,996.40, 672,121.84 and 280,260.56
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Solution
The fourth proportional to 486,996.40, 672,121.84 and 280,260.56 is: 386,798.02
Step by Step Solution
- Step 1: Write the proportion equation
486,996.40 : 672,121.84 = 280,260.56 : x - Step 2: Convert to fraction form
486,996.40/672,121.84 = 280,260.56/x - Step 3: Cross multiply
486,996.40x = 672,121.84 × 280,260.56 - Step 4: Simplify right side
486,996.40x = 188,369,243,266.63 - Step 5: Solve for x
x = 188,369,243,266.63/486,996.40 - Step 6: Final answer
x = 386,798.02
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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.