Finding the Fourth Proportional to 7,128,220.70, 10,692,740.65 and 2,080,310.30
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Solution
The fourth proportional to 7,128,220.70, 10,692,740.65 and 2,080,310.30 is: 3,120,584.99
Step by Step Solution
- Step 1: Write the proportion equation
7,128,220.70 : 10,692,740.65 = 2,080,310.30 : x - Step 2: Convert to fraction form
7,128,220.70/10,692,740.65 = 2,080,310.30/x - Step 3: Cross multiply
7,128,220.70x = 10,692,740.65 × 2,080,310.30 - Step 4: Simplify right side
7,128,220.70x = 22,244,218,509,423.70 - Step 5: Solve for x
x = 22,244,218,509,423.70/7,128,220.70 - Step 6: Final answer
x = 3,120,584.99
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1.5x scale
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.