Finding the Fourth Proportional to 10,642,690.80, 15,966,109.80 and 4,251,855.60
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Solution
The fourth proportional to 10,642,690.80, 15,966,109.80 and 4,251,855.60 is: 6,378,611.82
Step by Step Solution
- Step 1: Write the proportion equation
10,642,690.80 : 15,966,109.80 = 4,251,855.60 : x - Step 2: Convert to fraction form
10,642,690.80/15,966,109.80 = 4,251,855.60/x - Step 3: Cross multiply
10,642,690.80x = 15,966,109.80 × 4,251,855.60 - Step 4: Simplify right side
10,642,690.80x = 67,885,593,363,344.88 - Step 5: Solve for x
x = 67,885,593,363,344.88/10,642,690.80 - Step 6: Final answer
x = 6,378,611.82
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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.