Finding the Fourth Proportional to 1,270,263,633.75, 1,905,184,113.60 and 384,738,455.81
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Solution
The fourth proportional to 1,270,263,633.75, 1,905,184,113.60 and 384,738,455.81 is: 577,043,673.79
Step by Step Solution
- Step 1: Write the proportion equation
1,270,263,633.75 : 1,905,184,113.60 = 384,738,455.81 : x - Step 2: Convert to fraction form
1,270,263,633.75/1,905,184,113.60 = 384,738,455.81/x - Step 3: Cross multiply
1,270,263,633.75x = 1,905,184,113.60 × 384,738,455.81 - Step 4: Simplify right side
1,270,263,633.75x = 732,997,593,906,394,112 - Step 5: Solve for x
x = 732,997,593,906,394,112/1,270,263,633.75 - Step 6: Final answer
x = 577,043,673.79
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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.