Finding the Fourth Proportional to 718,249.99, 991,159.47 and 391,556.24
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Solution
The fourth proportional to 718,249.99, 991,159.47 and 391,556.24 is: 540,333.70
Step by Step Solution
- Step 1: Write the proportion equation
718,249.99 : 991,159.47 = 391,556.24 : x - Step 2: Convert to fraction form
718,249.99/991,159.47 = 391,556.24/x - Step 3: Cross multiply
718,249.99x = 991,159.47 × 391,556.24 - Step 4: Simplify right side
718,249.99x = 388,094,675,313.59 - Step 5: Solve for x
x = 388,094,675,313.59/718,249.99 - Step 6: Final answer
x = 540,333.70
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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.