Finding the Fourth Proportional to 1,236,385,405.20, 1,854,578,107.80 and 1,159,857,901.20
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Solution
The fourth proportional to 1,236,385,405.20, 1,854,578,107.80 and 1,159,857,901.20 is: 1,739,786,851.80
Step by Step Solution
- Step 1: Write the proportion equation
1,236,385,405.20 : 1,854,578,107.80 = 1,159,857,901.20 : x - Step 2: Convert to fraction form
1,236,385,405.20/1,854,578,107.80 = 1,159,857,901.20/x - Step 3: Cross multiply
1,236,385,405.20x = 1,854,578,107.80 × 1,159,857,901.20 - Step 4: Simplify right side
1,236,385,405.20x = 2,151,047,071,724,375,296 - Step 5: Solve for x
x = 2,151,047,071,724,375,296/1,236,385,405.20 - Step 6: Final answer
x = 1,739,786,851.80
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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.