Finding the Fourth Proportional to 1,585,560,789.12, 2,378,365,101.36 and 550,454,550.96
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Solution
The fourth proportional to 1,585,560,789.12, 2,378,365,101.36 and 550,454,550.96 is: 825,690,129.87
Step by Step Solution
- Step 1: Write the proportion equation
1,585,560,789.12 : 2,378,365,101.36 = 550,454,550.96 : x - Step 2: Convert to fraction form
1,585,560,789.12/2,378,365,101.36 = 550,454,550.96/x - Step 3: Cross multiply
1,585,560,789.12x = 2,378,365,101.36 × 550,454,550.96 - Step 4: Simplify right side
1,585,560,789.12x = 1,309,181,893,888,053,760 - Step 5: Solve for x
x = 1,309,181,893,888,053,760/1,585,560,789.12 - Step 6: Final answer
x = 825,690,129.87
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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.