Finding the Fourth Proportional to 1,490,821.03, 2,057,324.30 and 811,755.91
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Solution
The fourth proportional to 1,490,821.03, 2,057,324.30 and 811,755.91 is: 1,120,218.40
Step by Step Solution
- Step 1: Write the proportion equation
1,490,821.03 : 2,057,324.30 = 811,755.91 : x - Step 2: Convert to fraction form
1,490,821.03/2,057,324.30 = 811,755.91/x - Step 3: Cross multiply
1,490,821.03x = 2,057,324.30 × 811,755.91 - Step 4: Simplify right side
1,490,821.03x = 1,670,045,155,252.83 - Step 5: Solve for x
x = 1,670,045,155,252.83/1,490,821.03 - Step 6: Final answer
x = 1,120,218.40
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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.