Finding the Fourth Proportional to 720,455.21, 1,080,801.62 and 299,760.65
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Solution
The fourth proportional to 720,455.21, 1,080,801.62 and 299,760.65 is: 449,690.41
Step by Step Solution
- Step 1: Write the proportion equation
720,455.21 : 1,080,801.62 = 299,760.65 : x - Step 2: Convert to fraction form
720,455.21/1,080,801.62 = 299,760.65/x - Step 3: Cross multiply
720,455.21x = 1,080,801.62 × 299,760.65 - Step 4: Simplify right side
720,455.21x = 323,981,796,132.25 - Step 5: Solve for x
x = 323,981,796,132.25/720,455.21 - Step 6: Final answer
x = 449,690.41
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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.