Finding the Fourth Proportional to 663,556,108.80, 995,334,163.20 and 408,398,246.40
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Solution
The fourth proportional to 663,556,108.80, 995,334,163.20 and 408,398,246.40 is: 612,597,369.60
Step by Step Solution
- Step 1: Write the proportion equation
663,556,108.80 : 995,334,163.20 = 408,398,246.40 : x - Step 2: Convert to fraction form
663,556,108.80/995,334,163.20 = 408,398,246.40/x - Step 3: Cross multiply
663,556,108.80x = 995,334,163.20 × 408,398,246.40 - Step 4: Simplify right side
663,556,108.80x = 406,492,726,832,891,392 - Step 5: Solve for x
x = 406,492,726,832,891,392/663,556,108.80 - Step 6: Final answer
x = 612,597,369.60
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.