Finding the Fourth Proportional to 7,242,685.20, 10,864,027.80 and 2,193,995.70
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Solution
The fourth proportional to 7,242,685.20, 10,864,027.80 and 2,193,995.70 is: 3,290,993.55
Step by Step Solution
- Step 1: Write the proportion equation
7,242,685.20 : 10,864,027.80 = 2,193,995.70 : x - Step 2: Convert to fraction form
7,242,685.20/10,864,027.80 = 2,193,995.70/x - Step 3: Cross multiply
7,242,685.20x = 10,864,027.80 × 2,193,995.70 - Step 4: Simplify right side
7,242,685.20x = 23,835,630,277,880.46 - Step 5: Solve for x
x = 23,835,630,277,880.46/7,242,685.20 - Step 6: Final answer
x = 3,290,993.55
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Double scale
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Similar ratio
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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.