Finding the Third Proportional to 386,378.88 and 829,889.75
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Solution
The third proportional to 386,378.88 and 829,889.75 is: 1,782,491.34
Step by Step Solution
- Step 1: Write the proportion equation
386,378.88 : 829,889.75 = 829,889.75 : x - Step 2: Convert to fraction form
386,378.88/829,889.75 = 829,889.75/x - Step 3: Cross multiply
386,378.88x = 829,889.75 × 829,889.75 - Step 4: Simplify right side
386,378.88x = 688,716,997,155.06 - Step 5: Solve for x
x = 688,716,997,155.06/386,378.88 - Step 6: Final answer
x = 1,782,491.34
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Why These Related Problems?
These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.