Finding the Fourth Proportional to 716,380.36, 988,597.80 and 394,090.84
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Solution
The fourth proportional to 716,380.36, 988,597.80 and 394,090.84 is: 543,841.46
Step by Step Solution
- Step 1: Write the proportion equation
716,380.36 : 988,597.80 = 394,090.84 : x - Step 2: Convert to fraction form
716,380.36/988,597.80 = 394,090.84/x - Step 3: Cross multiply
716,380.36x = 988,597.80 × 394,090.84 - Step 4: Simplify right side
716,380.36x = 389,597,337,424.15 - Step 5: Solve for x
x = 389,597,337,424.15/716,380.36 - Step 6: Final answer
x = 543,841.46
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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.