Finding the Fourth Proportional to 1,389,349.49, 2,083,732.62 and 391,844.21
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Solution
The fourth proportional to 1,389,349.49, 2,083,732.62 and 391,844.21 is: 587,684.07
Step by Step Solution
- Step 1: Write the proportion equation
1,389,349.49 : 2,083,732.62 = 391,844.21 : x - Step 2: Convert to fraction form
1,389,349.49/2,083,732.62 = 391,844.21/x - Step 3: Cross multiply
1,389,349.49x = 2,083,732.62 × 391,844.21 - Step 4: Simplify right side
1,389,349.49x = 816,498,553,385.88 - Step 5: Solve for x
x = 816,498,553,385.88/1,389,349.49 - Step 6: Final answer
x = 587,684.07
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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.