Finding the Fourth Proportional to 4,199,923.20, 6,299,664.64 and 1,207,989.76
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Solution
The fourth proportional to 4,199,923.20, 6,299,664.64 and 1,207,989.76 is: 1,811,921.32
Step by Step Solution
- Step 1: Write the proportion equation
4,199,923.20 : 6,299,664.64 = 1,207,989.76 : x - Step 2: Convert to fraction form
4,199,923.20/6,299,664.64 = 1,207,989.76/x - Step 3: Cross multiply
4,199,923.20x = 6,299,664.64 × 1,207,989.76 - Step 4: Simplify right side
4,199,923.20x = 7,609,930,376,554.09 - Step 5: Solve for x
x = 7,609,930,376,554.09/4,199,923.20 - Step 6: Final answer
x = 1,811,921.32
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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.