Finding the Fourth Proportional to 717,615.12, 990,240.71 and 411,716.70
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Solution
The fourth proportional to 717,615.12, 990,240.71 and 411,716.70 is: 568,129.94
Step by Step Solution
- Step 1: Write the proportion equation
717,615.12 : 990,240.71 = 411,716.70 : x - Step 2: Convert to fraction form
717,615.12/990,240.71 = 411,716.70/x - Step 3: Cross multiply
717,615.12x = 990,240.71 × 411,716.70 - Step 4: Simplify right side
717,615.12x = 407,698,635,268.27 - Step 5: Solve for x
x = 407,698,635,268.27/717,615.12 - Step 6: Final answer
x = 568,129.94
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Double scale
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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.