Finding the Fourth Proportional to 486,979.11, 672,018.28 and 272,120.94
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Solution
The fourth proportional to 486,979.11, 672,018.28 and 272,120.94 is: 375,519.70
Step by Step Solution
- Step 1: Write the proportion equation
486,979.11 : 672,018.28 = 272,120.94 : x - Step 2: Convert to fraction form
486,979.11/672,018.28 = 272,120.94/x - Step 3: Cross multiply
486,979.11x = 672,018.28 × 272,120.94 - Step 4: Simplify right side
486,979.11x = 182,870,249,173.88 - Step 5: Solve for x
x = 182,870,249,173.88/486,979.11 - Step 6: Final answer
x = 375,519.70
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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.