Finding the Fourth Proportional to 7,381,811.70, 11,072,717.55 and 6,637,794.30
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Solution
The fourth proportional to 7,381,811.70, 11,072,717.55 and 6,637,794.30 is: 9,956,691.45
Step by Step Solution
- Step 1: Write the proportion equation
7,381,811.70 : 11,072,717.55 = 6,637,794.30 : x - Step 2: Convert to fraction form
7,381,811.70/11,072,717.55 = 6,637,794.30/x - Step 3: Cross multiply
7,381,811.70x = 11,072,717.55 × 6,637,794.30 - Step 4: Simplify right side
7,381,811.70x = 73,498,421,438,899.97 - Step 5: Solve for x
x = 73,498,421,438,899.97/7,381,811.70 - Step 6: Final answer
x = 9,956,691.45
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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.