Finding the Fourth Proportional to 861,736.20, 1,292,604.30 and 767,257.80
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Solution
The fourth proportional to 861,736.20, 1,292,604.30 and 767,257.80 is: 1,150,886.70
Step by Step Solution
- Step 1: Write the proportion equation
861,736.20 : 1,292,604.30 = 767,257.80 : x - Step 2: Convert to fraction form
861,736.20/1,292,604.30 = 767,257.80/x - Step 3: Cross multiply
861,736.20x = 1,292,604.30 × 767,257.80 - Step 4: Simplify right side
861,736.20x = 991,760,731,488.54 - Step 5: Solve for x
x = 991,760,731,488.54/861,736.20 - Step 6: Final answer
x = 1,150,886.70
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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.