Finding the Fourth Proportional to 725,728.18, 1,001,530.60 and 399,066.08
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Solution
The fourth proportional to 725,728.18, 1,001,530.60 and 399,066.08 is: 550,725.33
Step by Step Solution
- Step 1: Write the proportion equation
725,728.18 : 1,001,530.60 = 399,066.08 : x - Step 2: Convert to fraction form
725,728.18/1,001,530.60 = 399,066.08/x - Step 3: Cross multiply
725,728.18x = 1,001,530.60 × 399,066.08 - Step 4: Simplify right side
725,728.18x = 399,676,890,542.05 - Step 5: Solve for x
x = 399,676,890,542.05/725,728.18 - Step 6: Final answer
x = 550,725.33
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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.