Finding the Fourth Proportional to 1,578,942.09, 2,178,938.55 and 853,788.06
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Solution
The fourth proportional to 1,578,942.09, 2,178,938.55 and 853,788.06 is: 1,178,226.69
Step by Step Solution
- Step 1: Write the proportion equation
1,578,942.09 : 2,178,938.55 = 853,788.06 : x - Step 2: Convert to fraction form
1,578,942.09/2,178,938.55 = 853,788.06/x - Step 3: Cross multiply
1,578,942.09x = 2,178,938.55 × 853,788.06 - Step 4: Simplify right side
1,578,942.09x = 1,860,351,717,463.71 - Step 5: Solve for x
x = 1,860,351,717,463.71/1,578,942.09 - Step 6: Final answer
x = 1,178,226.69
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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.