Finding the Fourth Proportional to 1,080,736.29, 1,491,473.76 and 621,920.70
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Solution
The fourth proportional to 1,080,736.29, 1,491,473.76 and 621,920.70 is: 858,283.76
Step by Step Solution
- Step 1: Write the proportion equation
1,080,736.29 : 1,491,473.76 = 621,920.70 : x - Step 2: Convert to fraction form
1,080,736.29/1,491,473.76 = 621,920.70/x - Step 3: Cross multiply
1,080,736.29x = 1,491,473.76 × 621,920.70 - Step 4: Simplify right side
1,080,736.29x = 927,578,402,518.63 - Step 5: Solve for x
x = 927,578,402,518.63/1,080,736.29 - Step 6: Final answer
x = 858,283.76
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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.