Finding the Fourth Proportional to 8,117,127.20, 11,178,805.20 and 6,746,581.28
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Solution
The fourth proportional to 8,117,127.20, 11,178,805.20 and 6,746,581.28 is: 9,291,306.65
Step by Step Solution
- Step 1: Write the proportion equation
8,117,127.20 : 11,178,805.20 = 6,746,581.28 : x - Step 2: Convert to fraction form
8,117,127.20/11,178,805.20 = 6,746,581.28/x - Step 3: Cross multiply
8,117,127.20x = 11,178,805.20 × 6,746,581.28 - Step 4: Simplify right side
8,117,127.20x = 75,418,717,895,086.66 - Step 5: Solve for x
x = 75,418,717,895,086.66/8,117,127.20 - Step 6: Final answer
x = 9,291,306.65
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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.