Finding the Fourth Proportional to 5,478,006.20, 8,217,009.30 and 5,121,087.80
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Solution
The fourth proportional to 5,478,006.20, 8,217,009.30 and 5,121,087.80 is: 7,681,631.70
Step by Step Solution
- Step 1: Write the proportion equation
5,478,006.20 : 8,217,009.30 = 5,121,087.80 : x - Step 2: Convert to fraction form
5,478,006.20/8,217,009.30 = 5,121,087.80/x - Step 3: Cross multiply
5,478,006.20x = 8,217,009.30 × 5,121,087.80 - Step 4: Simplify right side
5,478,006.20x = 42,080,026,078,716.54 - Step 5: Solve for x
x = 42,080,026,078,716.54/5,478,006.20 - Step 6: Final answer
x = 7,681,631.70
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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.