Finding the Fourth Proportional to 823,428.05, 1,234,919.86 and 290,878.97
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Solution
The fourth proportional to 823,428.05, 1,234,919.86 and 290,878.97 is: 436,239.95
Step by Step Solution
- Step 1: Write the proportion equation
823,428.05 : 1,234,919.86 = 290,878.97 : x - Step 2: Convert to fraction form
823,428.05/1,234,919.86 = 290,878.97/x - Step 3: Cross multiply
823,428.05x = 1,234,919.86 × 290,878.97 - Step 4: Simplify right side
823,428.05x = 359,212,210,007.55 - Step 5: Solve for x
x = 359,212,210,007.55/823,428.05 - Step 6: Final answer
x = 436,239.95
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.