Finding the Fourth Proportional to 8,518,972.20, 11,756,657.70 and 4,651,852.20
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Solution
The fourth proportional to 8,518,972.20, 11,756,657.70 and 4,651,852.20 is: 6,419,815.99
Step by Step Solution
- Step 1: Write the proportion equation
8,518,972.20 : 11,756,657.70 = 4,651,852.20 : x - Step 2: Convert to fraction form
8,518,972.20/11,756,657.70 = 4,651,852.20/x - Step 3: Cross multiply
8,518,972.20x = 11,756,657.70 × 4,651,852.20 - Step 4: Simplify right side
8,518,972.20x = 54,690,233,986,391.94 - Step 5: Solve for x
x = 54,690,233,986,391.94/8,518,972.20 - Step 6: Final answer
x = 6,419,815.99
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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.