Finding the Fourth Proportional to 1,239,478,634.47, 1,859,505,175.55 and 354,175,524.57
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Solution
The fourth proportional to 1,239,478,634.47, 1,859,505,175.55 and 354,175,524.57 is: 531,345,359.80
Step by Step Solution
- Step 1: Write the proportion equation
1,239,478,634.47 : 1,859,505,175.55 = 354,175,524.57 : x - Step 2: Convert to fraction form
1,239,478,634.47/1,859,505,175.55 = 354,175,524.57/x - Step 3: Cross multiply
1,239,478,634.47x = 1,859,505,175.55 × 354,175,524.57 - Step 4: Simplify right side
1,239,478,634.47x = 658,591,220,994,021,888 - Step 5: Solve for x
x = 658,591,220,994,021,888/1,239,478,634.47 - Step 6: Final answer
x = 531,345,359.80
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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.