Finding the Fourth Proportional to 720,784.94, 994,703.99 and 398,515.85
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Solution
The fourth proportional to 720,784.94, 994,703.99 and 398,515.85 is: 549,963.35
Step by Step Solution
- Step 1: Write the proportion equation
720,784.94 : 994,703.99 = 398,515.85 : x - Step 2: Convert to fraction form
720,784.94/994,703.99 = 398,515.85/x - Step 3: Cross multiply
720,784.94x = 994,703.99 × 398,515.85 - Step 4: Simplify right side
720,784.94x = 396,405,299,107.14 - Step 5: Solve for x
x = 396,405,299,107.14/720,784.94 - Step 6: Final answer
x = 549,963.35
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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.