Finding the Fourth Proportional to 7,988,415.12, 11,023,162.56 and 4,725,352.80
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Solution
The fourth proportional to 7,988,415.12, 11,023,162.56 and 4,725,352.80 is: 6,520,483.89
Step by Step Solution
- Step 1: Write the proportion equation
7,988,415.12 : 11,023,162.56 = 4,725,352.80 : x - Step 2: Convert to fraction form
7,988,415.12/11,023,162.56 = 4,725,352.80/x - Step 3: Cross multiply
7,988,415.12x = 11,023,162.56 × 4,725,352.80 - Step 4: Simplify right side
7,988,415.12x = 52,088,332,067,751.17 - Step 5: Solve for x
x = 52,088,332,067,751.17/7,988,415.12 - Step 6: Final answer
x = 6,520,483.89
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.