Finding the Fourth Proportional to 13,178,439.20, 19,746,663.60 and 9,777,216.80
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Solution
The fourth proportional to 13,178,439.20, 19,746,663.60 and 9,777,216.80 is: 14,650,248.65
Step by Step Solution
- Step 1: Write the proportion equation
13,178,439.20 : 19,746,663.60 = 9,777,216.80 : x - Step 2: Convert to fraction form
13,178,439.20/19,746,663.60 = 9,777,216.80/x - Step 3: Cross multiply
13,178,439.20x = 19,746,663.60 × 9,777,216.80 - Step 4: Simplify right side
13,178,439.20x = 193,067,411,093,868.50 - Step 5: Solve for x
x = 193,067,411,093,868.50/13,178,439.20 - Step 6: Final answer
x = 14,650,248.65
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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.