Finding the Fourth Proportional to 7,163,487.76, 9,885,520.36 and 3,900,265.08
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Solution
The fourth proportional to 7,163,487.76, 9,885,520.36 and 3,900,265.08 is: 5,382,315.31
Step by Step Solution
- Step 1: Write the proportion equation
7,163,487.76 : 9,885,520.36 = 3,900,265.08 : x - Step 2: Convert to fraction form
7,163,487.76/9,885,520.36 = 3,900,265.08/x - Step 3: Cross multiply
7,163,487.76x = 9,885,520.36 × 3,900,265.08 - Step 4: Simplify right side
7,163,487.76x = 38,556,149,857,737.02 - Step 5: Solve for x
x = 38,556,149,857,737.02/7,163,487.76 - Step 6: Final answer
x = 5,382,315.31
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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.