Finding the Fourth Proportional to 389,777.57, 538,409.43 and 313,583.70
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Solution
The fourth proportional to 389,777.57, 538,409.43 and 313,583.70 is: 433,160.95
Step by Step Solution
- Step 1: Write the proportion equation
389,777.57 : 538,409.43 = 313,583.70 : x - Step 2: Convert to fraction form
389,777.57/538,409.43 = 313,583.70/x - Step 3: Cross multiply
389,777.57x = 538,409.43 × 313,583.70 - Step 4: Simplify right side
389,777.57x = 168,836,423,193.33 - Step 5: Solve for x
x = 168,836,423,193.33/389,777.57 - Step 6: Final answer
x = 433,160.95
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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.