Finding the Fourth Proportional to 420,749,170.72, 580,622,717.64 and 235,111,711.84
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Solution
The fourth proportional to 420,749,170.72, 580,622,717.64 and 235,111,711.84 is: 324,447,938.53
Step by Step Solution
- Step 1: Write the proportion equation
420,749,170.72 : 580,622,717.64 = 235,111,711.84 : x - Step 2: Convert to fraction form
420,749,170.72/580,622,717.64 = 235,111,711.84/x - Step 3: Cross multiply
420,749,170.72x = 580,622,717.64 × 235,111,711.84 - Step 4: Simplify right side
420,749,170.72x = 136,511,201,077,533,360 - Step 5: Solve for x
x = 136,511,201,077,533,360/420,749,170.72 - Step 6: Final answer
x = 324,447,938.53
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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.