Finding the Fourth Proportional to 892,398,755.12, 1,230,212,349.86 and 623,640,170.70
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Solution
The fourth proportional to 892,398,755.12, 1,230,212,349.86 and 623,640,170.70 is: 859,716,394.12
Step by Step Solution
- Step 1: Write the proportion equation
892,398,755.12 : 1,230,212,349.86 = 623,640,170.70 : x - Step 2: Convert to fraction form
892,398,755.12/1,230,212,349.86 = 623,640,170.70/x - Step 3: Cross multiply
892,398,755.12x = 1,230,212,349.86 × 623,640,170.70 - Step 4: Simplify right side
892,398,755.12x = 767,209,839,860,820,352 - Step 5: Solve for x
x = 767,209,839,860,820,352/892,398,755.12 - Step 6: Final answer
x = 859,716,394.12
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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.