Finding the Fourth Proportional to 719,406.77, 992,781.53 and 397,117.09
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Solution
The fourth proportional to 719,406.77, 992,781.53 and 397,117.09 is: 548,021.69
Step by Step Solution
- Step 1: Write the proportion equation
719,406.77 : 992,781.53 = 397,117.09 : x - Step 2: Convert to fraction form
719,406.77/992,781.53 = 397,117.09/x - Step 3: Cross multiply
719,406.77x = 992,781.53 × 397,117.09 - Step 4: Simplify right side
719,406.77x = 394,250,512,199.35 - Step 5: Solve for x
x = 394,250,512,199.35/719,406.77 - Step 6: Final answer
x = 548,021.69
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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.