Finding the Fourth Proportional to 7,168,618.84, 9,892,578.18 and 3,905,472.64
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Solution
The fourth proportional to 7,168,618.84, 9,892,578.18 and 3,905,472.64 is: 5,389,489.14
Step by Step Solution
- Step 1: Write the proportion equation
7,168,618.84 : 9,892,578.18 = 3,905,472.64 : x - Step 2: Convert to fraction form
7,168,618.84/9,892,578.18 = 3,905,472.64/x - Step 3: Cross multiply
7,168,618.84x = 9,892,578.18 × 3,905,472.64 - Step 4: Simplify right side
7,168,618.84x = 38,635,193,421,050.99 - Step 5: Solve for x
x = 38,635,193,421,050.99/7,168,618.84 - Step 6: Final answer
x = 5,389,489.14
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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.