Finding the Fourth Proportional to 643,412,026.09, 887,837,545.73 and 361,089,713.84
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Solution
The fourth proportional to 643,412,026.09, 887,837,545.73 and 361,089,713.84 is: 498,263,930.93
Step by Step Solution
- Step 1: Write the proportion equation
643,412,026.09 : 887,837,545.73 = 361,089,713.84 : x - Step 2: Convert to fraction form
643,412,026.09/887,837,545.73 = 361,089,713.84/x - Step 3: Cross multiply
643,412,026.09x = 887,837,545.73 × 361,089,713.84 - Step 4: Simplify right side
643,412,026.09x = 320,589,005,324,053,568 - Step 5: Solve for x
x = 320,589,005,324,053,568/643,412,026.09 - Step 6: Final answer
x = 498,263,930.93
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.