Finding the Fourth Proportional to 1,135,075,956.21, 1,566,404,126.70 and 613,555,188.21
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Solution
The fourth proportional to 1,135,075,956.21, 1,566,404,126.70 and 613,555,188.21 is: 846,705,785.21
Step by Step Solution
- Step 1: Write the proportion equation
1,135,075,956.21 : 1,566,404,126.70 = 613,555,188.21 : x - Step 2: Convert to fraction form
1,135,075,956.21/1,566,404,126.70 = 613,555,188.21/x - Step 3: Cross multiply
1,135,075,956.21x = 1,566,404,126.70 × 613,555,188.21 - Step 4: Simplify right side
1,135,075,956.21x = 961,075,378,770,339,328 - Step 5: Solve for x
x = 961,075,378,770,339,328/1,135,075,956.21 - Step 6: Final answer
x = 846,705,785.21
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1.5x scale
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.