Finding the Fourth Proportional to 717,814.18, 990,627.69 and 395,524.19
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Solution
The fourth proportional to 717,814.18, 990,627.69 and 395,524.19 is: 545,847.69
Step by Step Solution
- Step 1: Write the proportion equation
717,814.18 : 990,627.69 = 395,524.19 : x - Step 2: Convert to fraction form
717,814.18/990,627.69 = 395,524.19/x - Step 3: Cross multiply
717,814.18x = 990,627.69 × 395,524.19 - Step 4: Simplify right side
717,814.18x = 391,817,214,678.82 - Step 5: Solve for x
x = 391,817,214,678.82/717,814.18 - Step 6: Final answer
x = 545,847.69
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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.