Finding the Fourth Proportional to 10,781,551.20, 16,172,326.80 and 4,388,512.80
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Solution
The fourth proportional to 10,781,551.20, 16,172,326.80 and 4,388,512.80 is: 6,582,769.20
Step by Step Solution
- Step 1: Write the proportion equation
10,781,551.20 : 16,172,326.80 = 4,388,512.80 : x - Step 2: Convert to fraction form
10,781,551.20/16,172,326.80 = 4,388,512.80/x - Step 3: Cross multiply
10,781,551.20x = 16,172,326.80 × 4,388,512.80 - Step 4: Simplify right side
10,781,551.20x = 70,972,463,167,583.05 - Step 5: Solve for x
x = 70,972,463,167,583.05/10,781,551.20 - Step 6: Final answer
x = 6,582,769.20
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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.