Finding the Fourth Proportional to 7,974,811.20, 11,964,981.60 and 3,490,305.60
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Solution
The fourth proportional to 7,974,811.20, 11,964,981.60 and 3,490,305.60 is: 5,236,668.46
Step by Step Solution
- Step 1: Write the proportion equation
7,974,811.20 : 11,964,981.60 = 3,490,305.60 : x - Step 2: Convert to fraction form
7,974,811.20/11,964,981.60 = 3,490,305.60/x - Step 3: Cross multiply
7,974,811.20x = 11,964,981.60 × 3,490,305.60 - Step 4: Simplify right side
7,974,811.20x = 41,761,442,282,376.96 - Step 5: Solve for x
x = 41,761,442,282,376.96/7,974,811.20 - Step 6: Final answer
x = 5,236,668.46
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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.