Finding the Fourth Proportional to 1,121,173.98, 1,680,760.71 and 411,036.18
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Solution
The fourth proportional to 1,121,173.98, 1,680,760.71 and 411,036.18 is: 616,187.56
Step by Step Solution
- Step 1: Write the proportion equation
1,121,173.98 : 1,680,760.71 = 411,036.18 : x - Step 2: Convert to fraction form
1,121,173.98/1,680,760.71 = 411,036.18/x - Step 3: Cross multiply
1,121,173.98x = 1,680,760.71 × 411,036.18 - Step 4: Simplify right side
1,121,173.98x = 690,853,461,732.49 - Step 5: Solve for x
x = 690,853,461,732.49/1,121,173.98 - Step 6: Final answer
x = 616,187.56
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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.