Finding the Fourth Proportional to 1,117,939.20, 1,542,753.99 and 608,640.36
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Solution
The fourth proportional to 1,117,939.20, 1,542,753.99 and 608,640.36 is: 839,922.55
Step by Step Solution
- Step 1: Write the proportion equation
1,117,939.20 : 1,542,753.99 = 608,640.36 : x - Step 2: Convert to fraction form
1,117,939.20/1,542,753.99 = 608,640.36/x - Step 3: Cross multiply
1,117,939.20x = 1,542,753.99 × 608,640.36 - Step 4: Simplify right side
1,117,939.20x = 938,982,343,865.04 - Step 5: Solve for x
x = 938,982,343,865.04/1,117,939.20 - Step 6: Final answer
x = 839,922.55
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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.