Finding the Fourth Proportional to 3,889,645.32, 5,367,979.98 and 2,171,101.80
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Solution
The fourth proportional to 3,889,645.32, 5,367,979.98 and 2,171,101.80 is: 2,996,270.88
Step by Step Solution
- Step 1: Write the proportion equation
3,889,645.32 : 5,367,979.98 = 2,171,101.80 : x - Step 2: Convert to fraction form
3,889,645.32/5,367,979.98 = 2,171,101.80/x - Step 3: Cross multiply
3,889,645.32x = 5,367,979.98 × 2,171,101.80 - Step 4: Simplify right side
3,889,645.32x = 11,654,430,996,941.96 - Step 5: Solve for x
x = 11,654,430,996,941.96/3,889,645.32 - Step 6: Final answer
x = 2,996,270.88
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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.