Finding the Fourth Proportional to 5,696,139.20, 7,860,367.80 and 3,117,321.20
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Solution
The fourth proportional to 5,696,139.20, 7,860,367.80 and 3,117,321.20 is: 4,301,736.72
Step by Step Solution
- Step 1: Write the proportion equation
5,696,139.20 : 7,860,367.80 = 3,117,321.20 : x - Step 2: Convert to fraction form
5,696,139.20/7,860,367.80 = 3,117,321.20/x - Step 3: Cross multiply
5,696,139.20x = 7,860,367.80 × 3,117,321.20 - Step 4: Simplify right side
5,696,139.20x = 24,503,291,182,737.36 - Step 5: Solve for x
x = 24,503,291,182,737.36/5,696,139.20 - Step 6: Final answer
x = 4,301,736.72
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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.