Finding the Fourth Proportional to 717,872.12, 990,670.17 and 395,593.75
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Solution
The fourth proportional to 717,872.12, 990,670.17 and 395,593.75 is: 545,923.04
Step by Step Solution
- Step 1: Write the proportion equation
717,872.12 : 990,670.17 = 395,593.75 : x - Step 2: Convert to fraction form
717,872.12/990,670.17 = 395,593.75/x - Step 3: Cross multiply
717,872.12x = 990,670.17 × 395,593.75 - Step 4: Simplify right side
717,872.12x = 391,902,929,172.64 - Step 5: Solve for x
x = 391,902,929,172.64/717,872.12 - Step 6: Final answer
x = 545,923.04
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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.