Finding the Fourth Proportional to 412,639.17, 618,958.75 and 272,364.99
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Solution
The fourth proportional to 412,639.17, 618,958.75 and 272,364.99 is: 408,547.48
Step by Step Solution
- Step 1: Write the proportion equation
412,639.17 : 618,958.75 = 272,364.99 : x - Step 2: Convert to fraction form
412,639.17/618,958.75 = 272,364.99/x - Step 3: Cross multiply
412,639.17x = 618,958.75 × 272,364.99 - Step 4: Simplify right side
412,639.17x = 168,582,693,754.16 - Step 5: Solve for x
x = 168,582,693,754.16/412,639.17 - Step 6: Final answer
x = 408,547.48
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.