Finding the Fourth Proportional to 1,398,689.05, 1,930,171.63 and 786,841.63
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Solution
The fourth proportional to 1,398,689.05, 1,930,171.63 and 786,841.63 is: 1,085,830.61
Step by Step Solution
- Step 1: Write the proportion equation
1,398,689.05 : 1,930,171.63 = 786,841.63 : x - Step 2: Convert to fraction form
1,398,689.05/1,930,171.63 = 786,841.63/x - Step 3: Cross multiply
1,398,689.05x = 1,930,171.63 × 786,841.63 - Step 4: Simplify right side
1,398,689.05x = 1,518,739,394,354.66 - Step 5: Solve for x
x = 1,518,739,394,354.66/1,398,689.05 - Step 6: Final answer
x = 1,085,830.61
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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.