Finding the Fourth Proportional to 2,139,343.29, 3,208,990.20 and 520,121.31
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Solution
The fourth proportional to 2,139,343.29, 3,208,990.20 and 520,121.31 is: 780,175.95
Step by Step Solution
- Step 1: Write the proportion equation
2,139,343.29 : 3,208,990.20 = 520,121.31 : x - Step 2: Convert to fraction form
2,139,343.29/3,208,990.20 = 520,121.31/x - Step 3: Cross multiply
2,139,343.29x = 3,208,990.20 × 520,121.31 - Step 4: Simplify right side
2,139,343.29x = 1,669,064,186,601.16 - Step 5: Solve for x
x = 1,669,064,186,601.16/2,139,343.29 - Step 6: Final answer
x = 780,175.95
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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.