Finding the Fourth Proportional to 7,872,340.80, 11,808,511.20 and 2,822,995.20
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Solution
The fourth proportional to 7,872,340.80, 11,808,511.20 and 2,822,995.20 is: 4,234,492.80
Step by Step Solution
- Step 1: Write the proportion equation
7,872,340.80 : 11,808,511.20 = 2,822,995.20 : x - Step 2: Convert to fraction form
7,872,340.80/11,808,511.20 = 2,822,995.20/x - Step 3: Cross multiply
7,872,340.80x = 11,808,511.20 × 2,822,995.20 - Step 4: Simplify right side
7,872,340.80x = 33,335,370,436,746.24 - Step 5: Solve for x
x = 33,335,370,436,746.24/7,872,340.80 - Step 6: Final answer
x = 4,234,492.80
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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.