Finding the Fourth Proportional to 2,657,758,859.40, 3,986,638,289.10 and 1,277,240,478.60
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Solution
The fourth proportional to 2,657,758,859.40, 3,986,638,289.10 and 1,277,240,478.60 is: 1,915,860,717.90
Step by Step Solution
- Step 1: Write the proportion equation
2,657,758,859.40 : 3,986,638,289.10 = 1,277,240,478.60 : x - Step 2: Convert to fraction form
2,657,758,859.40/3,986,638,289.10 = 1,277,240,478.60/x - Step 3: Cross multiply
2,657,758,859.40x = 3,986,638,289.10 × 1,277,240,478.60 - Step 4: Simplify right side
2,657,758,859.40x = 5,091,895,796,375,169,024 - Step 5: Solve for x
x = 5,091,895,796,375,169,024/2,657,758,859.40 - Step 6: Final answer
x = 1,915,860,717.90
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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.