Finding the Fourth Proportional to 7,290,743.80, 10,936,115.70 and 6,870,839.80
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Solution
The fourth proportional to 7,290,743.80, 10,936,115.70 and 6,870,839.80 is: 10,306,259.70
Step by Step Solution
- Step 1: Write the proportion equation
7,290,743.80 : 10,936,115.70 = 6,870,839.80 : x - Step 2: Convert to fraction form
7,290,743.80/10,936,115.70 = 6,870,839.80/x - Step 3: Cross multiply
7,290,743.80x = 10,936,115.70 × 6,870,839.80 - Step 4: Simplify right side
7,290,743.80x = 75,140,299,008,964.86 - Step 5: Solve for x
x = 75,140,299,008,964.86/7,290,743.80 - Step 6: Final answer
x = 10,306,259.70
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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.