Finding the Fourth Proportional to 419,905,139.10, 629,857,708.65 and 386,743,220.70
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Solution
The fourth proportional to 419,905,139.10, 629,857,708.65 and 386,743,220.70 is: 580,114,831.05
Step by Step Solution
- Step 1: Write the proportion equation
419,905,139.10 : 629,857,708.65 = 386,743,220.70 : x - Step 2: Convert to fraction form
419,905,139.10/629,857,708.65 = 386,743,220.70/x - Step 3: Cross multiply
419,905,139.10x = 629,857,708.65 × 386,743,220.70 - Step 4: Simplify right side
419,905,139.10x = 243,593,198,826,023,232 - Step 5: Solve for x
x = 243,593,198,826,023,232/419,905,139.10 - Step 6: Final answer
x = 580,114,831.05
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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.