Finding the Fourth Proportional to 919,327,358.40, 1,378,991,037.60 and 804,536,102.40
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Solution
The fourth proportional to 919,327,358.40, 1,378,991,037.60 and 804,536,102.40 is: 1,206,804,153.60
Step by Step Solution
- Step 1: Write the proportion equation
919,327,358.40 : 1,378,991,037.60 = 804,536,102.40 : x - Step 2: Convert to fraction form
919,327,358.40/1,378,991,037.60 = 804,536,102.40/x - Step 3: Cross multiply
919,327,358.40x = 1,378,991,037.60 × 804,536,102.40 - Step 4: Simplify right side
919,327,358.40x = 1,109,448,074,635,235,712 - Step 5: Solve for x
x = 1,109,448,074,635,235,712/919,327,358.40 - Step 6: Final answer
x = 1,206,804,153.60
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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.