Finding the Fourth Proportional to 720,203.52, 993,891.30 and 397,921.05
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Solution
The fourth proportional to 720,203.52, 993,891.30 and 397,921.05 is: 549,136.82
Step by Step Solution
- Step 1: Write the proportion equation
720,203.52 : 993,891.30 = 397,921.05 : x - Step 2: Convert to fraction form
720,203.52/993,891.30 = 397,921.05/x - Step 3: Cross multiply
720,203.52x = 993,891.30 × 397,921.05 - Step 4: Simplify right side
720,203.52x = 395,490,269,681.87 - Step 5: Solve for x
x = 395,490,269,681.87/720,203.52 - Step 6: Final answer
x = 549,136.82
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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.