Finding the Fourth Proportional to 4,990,257.18, 7,485,658.20 and 1,578,289.08
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Solution
The fourth proportional to 4,990,257.18, 7,485,658.20 and 1,578,289.08 is: 2,367,519.78
Step by Step Solution
- Step 1: Write the proportion equation
4,990,257.18 : 7,485,658.20 = 1,578,289.08 : x - Step 2: Convert to fraction form
4,990,257.18/7,485,658.20 = 1,578,289.08/x - Step 3: Cross multiply
4,990,257.18x = 7,485,658.20 × 1,578,289.08 - Step 4: Simplify right side
4,990,257.18x = 11,814,532,593,672.46 - Step 5: Solve for x
x = 11,814,532,593,672.46/4,990,257.18 - Step 6: Final answer
x = 2,367,519.78
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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.