Finding the Fourth Proportional to 664,136.70, 996,205.05 and 612,815.10
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Solution
The fourth proportional to 664,136.70, 996,205.05 and 612,815.10 is: 919,222.65
Step by Step Solution
- Step 1: Write the proportion equation
664,136.70 : 996,205.05 = 612,815.10 : x - Step 2: Convert to fraction form
664,136.70/996,205.05 = 612,815.10/x - Step 3: Cross multiply
664,136.70x = 996,205.05 × 612,815.10 - Step 4: Simplify right side
664,136.70x = 610,489,497,336.26 - Step 5: Solve for x
x = 610,489,497,336.26/664,136.70 - Step 6: Final answer
x = 919,222.65
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Double scale
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Similar ratio
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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.