Finding the Fourth Proportional to 1,327,232,186.40, 1,990,848,279.60 and 498,184,226.40
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Solution
The fourth proportional to 1,327,232,186.40, 1,990,848,279.60 and 498,184,226.40 is: 747,276,339.60
Step by Step Solution
- Step 1: Write the proportion equation
1,327,232,186.40 : 1,990,848,279.60 = 498,184,226.40 : x - Step 2: Convert to fraction form
1,327,232,186.40/1,990,848,279.60 = 498,184,226.40/x - Step 3: Cross multiply
1,327,232,186.40x = 1,990,848,279.60 × 498,184,226.40 - Step 4: Simplify right side
1,327,232,186.40x = 991,809,210,052,296,832 - Step 5: Solve for x
x = 991,809,210,052,296,832/1,327,232,186.40 - Step 6: Final answer
x = 747,276,339.60
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Double scale
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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.