Finding the Fourth Proportional to 643,747.80, 965,621.70 and 477,859.80
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Solution
The fourth proportional to 643,747.80, 965,621.70 and 477,859.80 is: 716,789.70
Step by Step Solution
- Step 1: Write the proportion equation
643,747.80 : 965,621.70 = 477,859.80 : x - Step 2: Convert to fraction form
643,747.80/965,621.70 = 477,859.80/x - Step 3: Cross multiply
643,747.80x = 965,621.70 × 477,859.80 - Step 4: Simplify right side
643,747.80x = 461,431,792,437.66 - Step 5: Solve for x
x = 461,431,792,437.66/643,747.80 - Step 6: Final answer
x = 716,789.70
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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.