Finding the Fourth Proportional to 664,135.20, 996,202.80 and 612,813.60
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Solution
The fourth proportional to 664,135.20, 996,202.80 and 612,813.60 is: 919,220.40
Step by Step Solution
- Step 1: Write the proportion equation
664,135.20 : 996,202.80 = 612,813.60 : x - Step 2: Convert to fraction form
664,135.20/996,202.80 = 612,813.60/x - Step 3: Cross multiply
664,135.20x = 996,202.80 × 612,813.60 - Step 4: Simplify right side
664,135.20x = 610,486,624,198.08 - Step 5: Solve for x
x = 610,486,624,198.08/664,135.20 - Step 6: Final answer
x = 919,220.40
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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.