Finding the Fourth Proportional to 914,243.78, 1,370,104.49 and 689,357.07
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Solution
The fourth proportional to 914,243.78, 1,370,104.49 and 689,357.07 is: 1,033,084.65
Step by Step Solution
- Step 1: Write the proportion equation
914,243.78 : 1,370,104.49 = 689,357.07 : x - Step 2: Convert to fraction form
914,243.78/1,370,104.49 = 689,357.07/x - Step 3: Cross multiply
914,243.78x = 1,370,104.49 × 689,357.07 - Step 4: Simplify right side
914,243.78x = 944,491,213,373.46 - Step 5: Solve for x
x = 944,491,213,373.46/914,243.78 - Step 6: Final answer
x = 1,033,084.65
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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.