Finding the Fourth Proportional to 8,312,795.12, 12,469,899.76 and 2,920,979.92
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Solution
The fourth proportional to 8,312,795.12, 12,469,899.76 and 2,920,979.92 is: 4,381,718.34
Step by Step Solution
- Step 1: Write the proportion equation
8,312,795.12 : 12,469,899.76 = 2,920,979.92 : x - Step 2: Convert to fraction form
8,312,795.12/12,469,899.76 = 2,920,979.92/x - Step 3: Cross multiply
8,312,795.12x = 12,469,899.76 × 2,920,979.92 - Step 4: Simplify right side
8,312,795.12x = 36,424,326,803,372.82 - Step 5: Solve for x
x = 36,424,326,803,372.82/8,312,795.12 - Step 6: Final answer
x = 4,381,718.34
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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.