Finding the Fourth Proportional to 1,638,795,013.20, 2,458,192,519.80 and 1,449,389,440.80
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Solution
The fourth proportional to 1,638,795,013.20, 2,458,192,519.80 and 1,449,389,440.80 is: 2,174,084,161.20
Step by Step Solution
- Step 1: Write the proportion equation
1,638,795,013.20 : 2,458,192,519.80 = 1,449,389,440.80 : x - Step 2: Convert to fraction form
1,638,795,013.20/2,458,192,519.80 = 1,449,389,440.80/x - Step 3: Cross multiply
1,638,795,013.20x = 2,458,192,519.80 × 1,449,389,440.80 - Step 4: Simplify right side
1,638,795,013.20x = 3,562,878,281,651,664,896 - Step 5: Solve for x
x = 3,562,878,281,651,664,896/1,638,795,013.20 - Step 6: Final answer
x = 2,174,084,161.20
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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.