Finding the Fourth Proportional to 919,327,371.90, 1,378,991,057.85 and 804,536,115.90
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Solution
The fourth proportional to 919,327,371.90, 1,378,991,057.85 and 804,536,115.90 is: 1,206,804,173.85
Step by Step Solution
- Step 1: Write the proportion equation
919,327,371.90 : 1,378,991,057.85 = 804,536,115.90 : x - Step 2: Convert to fraction form
919,327,371.90/1,378,991,057.85 = 804,536,115.90/x - Step 3: Cross multiply
919,327,371.90x = 1,378,991,057.85 × 804,536,115.90 - Step 4: Simplify right side
919,327,371.90x = 1,109,448,109,543,471,104 - Step 5: Solve for x
x = 1,109,448,109,543,471,104/919,327,371.90 - Step 6: Final answer
x = 1,206,804,173.85
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1.5x scale
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.