Finding the Fourth Proportional to 478,971,691.20, 718,457,536.80 and 478,971,691.20
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Solution
The fourth proportional to 478,971,691.20, 718,457,536.80 and 478,971,691.20 is: 718,457,536.80
Step by Step Solution
- Step 1: Write the proportion equation
478,971,691.20 : 718,457,536.80 = 478,971,691.20 : x - Step 2: Convert to fraction form
478,971,691.20/718,457,536.80 = 478,971,691.20/x - Step 3: Cross multiply
478,971,691.20x = 718,457,536.80 × 478,971,691.20 - Step 4: Simplify right side
478,971,691.20x = 344,120,821,456,482,176 - Step 5: Solve for x
x = 344,120,821,456,482,176/478,971,691.20 - Step 6: Final answer
x = 718,457,536.80
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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.