Finding the Fourth Proportional to 720,662.80, 994,795.08 and 645,080.08
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Solution
The fourth proportional to 720,662.80, 994,795.08 and 645,080.08 is: 890,461.52
Step by Step Solution
- Step 1: Write the proportion equation
720,662.80 : 994,795.08 = 645,080.08 : x - Step 2: Convert to fraction form
720,662.80/994,795.08 = 645,080.08/x - Step 3: Cross multiply
720,662.80x = 994,795.08 × 645,080.08 - Step 4: Simplify right side
720,662.80x = 641,722,489,790.01 - Step 5: Solve for x
x = 641,722,489,790.01/720,662.80 - Step 6: Final answer
x = 890,461.52
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1.5x scale
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.