Finding the Fourth Proportional to 3,943,655.40, 5,911,400.70 and 2,142,733.80
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Solution
The fourth proportional to 3,943,655.40, 5,911,400.70 and 2,142,733.80 is: 3,211,882.58
Step by Step Solution
- Step 1: Write the proportion equation
3,943,655.40 : 5,911,400.70 = 2,142,733.80 : x - Step 2: Convert to fraction form
3,943,655.40/5,911,400.70 = 2,142,733.80/x - Step 3: Cross multiply
3,943,655.40x = 5,911,400.70 × 2,142,733.80 - Step 4: Simplify right side
3,943,655.40x = 12,666,558,085,233.66 - Step 5: Solve for x
x = 12,666,558,085,233.66/3,943,655.40 - Step 6: Final answer
x = 3,211,882.58
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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.