Finding the Fourth Proportional to 721,789,953.99, 995,899,398.50 and 408,524,167.95
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Solution
The fourth proportional to 721,789,953.99, 995,899,398.50 and 408,524,167.95 is: 563,666,716.17
Step by Step Solution
- Step 1: Write the proportion equation
721,789,953.99 : 995,899,398.50 = 408,524,167.95 : x - Step 2: Convert to fraction form
721,789,953.99/995,899,398.50 = 408,524,167.95/x - Step 3: Cross multiply
721,789,953.99x = 995,899,398.50 × 408,524,167.95 - Step 4: Simplify right side
721,789,953.99x = 406,848,973,131,404,736 - Step 5: Solve for x
x = 406,848,973,131,404,736/721,789,953.99 - Step 6: Final answer
x = 563,666,716.17
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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.