Finding the Fourth Proportional to 984,385,912.80, 1,476,578,869.20 and 824,337,170.40
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Solution
The fourth proportional to 984,385,912.80, 1,476,578,869.20 and 824,337,170.40 is: 1,236,505,755.60
Step by Step Solution
- Step 1: Write the proportion equation
984,385,912.80 : 1,476,578,869.20 = 824,337,170.40 : x - Step 2: Convert to fraction form
984,385,912.80/1,476,578,869.20 = 824,337,170.40/x - Step 3: Cross multiply
984,385,912.80x = 1,476,578,869.20 × 824,337,170.40 - Step 4: Simplify right side
984,385,912.80x = 1,217,198,846,908,759,808 - Step 5: Solve for x
x = 1,217,198,846,908,759,808/984,385,912.80 - Step 6: Final answer
x = 1,236,505,755.60
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1.5x scale
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.