Finding the Fourth Proportional to 1,485,874,189.20, 2,228,811,283.80 and 840,901,645.20
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Solution
The fourth proportional to 1,485,874,189.20, 2,228,811,283.80 and 840,901,645.20 is: 1,261,352,467.80
Step by Step Solution
- Step 1: Write the proportion equation
1,485,874,189.20 : 2,228,811,283.80 = 840,901,645.20 : x - Step 2: Convert to fraction form
1,485,874,189.20/2,228,811,283.80 = 840,901,645.20/x - Step 3: Cross multiply
1,485,874,189.20x = 2,228,811,283.80 × 840,901,645.20 - Step 4: Simplify right side
1,485,874,189.20x = 1,874,211,075,387,744,256 - Step 5: Solve for x
x = 1,874,211,075,387,744,256/1,485,874,189.20 - Step 6: Final answer
x = 1,261,352,467.80
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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.