Finding the Fourth Proportional to 691,715.80, 1,037,573.70 and 638,571.70
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Solution
The fourth proportional to 691,715.80, 1,037,573.70 and 638,571.70 is: 957,857.55
Step by Step Solution
- Step 1: Write the proportion equation
691,715.80 : 1,037,573.70 = 638,571.70 : x - Step 2: Convert to fraction form
691,715.80/1,037,573.70 = 638,571.70/x - Step 3: Cross multiply
691,715.80x = 1,037,573.70 × 638,571.70 - Step 4: Simplify right side
691,715.80x = 662,565,201,484.29 - Step 5: Solve for x
x = 662,565,201,484.29/691,715.80 - Step 6: Final answer
x = 957,857.55
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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.