Finding the Fourth Proportional to 1,189,879,390.14, 1,642,073,434.14 and 661,265,656.26
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Solution
The fourth proportional to 1,189,879,390.14, 1,642,073,434.14 and 661,265,656.26 is: 912,568,766.26
Step by Step Solution
- Step 1: Write the proportion equation
1,189,879,390.14 : 1,642,073,434.14 = 661,265,656.26 : x - Step 2: Convert to fraction form
1,189,879,390.14/1,642,073,434.14 = 661,265,656.26/x - Step 3: Cross multiply
1,189,879,390.14x = 1,642,073,434.14 × 661,265,656.26 - Step 4: Simplify right side
1,189,879,390.14x = 1,085,846,767,053,699,072 - Step 5: Solve for x
x = 1,085,846,767,053,699,072/1,189,879,390.14 - Step 6: Final answer
x = 912,568,766.26
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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.