Finding the Fourth Proportional to 431,569,121.40, 647,353,682.10 and 124,871,239.80
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Solution
The fourth proportional to 431,569,121.40, 647,353,682.10 and 124,871,239.80 is: 187,306,859.70
Step by Step Solution
- Step 1: Write the proportion equation
431,569,121.40 : 647,353,682.10 = 124,871,239.80 : x - Step 2: Convert to fraction form
431,569,121.40/647,353,682.10 = 124,871,239.80/x - Step 3: Cross multiply
431,569,121.40x = 647,353,682.10 × 124,871,239.80 - Step 4: Simplify right side
431,569,121.40x = 80,835,856,872,922,064 - Step 5: Solve for x
x = 80,835,856,872,922,064/431,569,121.40 - Step 6: Final answer
x = 187,306,859.70
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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.