Finding the Fourth Proportional to 12,220,273.20, 18,340,907.40 and 5,407,330.80
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Solution
The fourth proportional to 12,220,273.20, 18,340,907.40 and 5,407,330.80 is: 8,115,641.27
Step by Step Solution
- Step 1: Write the proportion equation
12,220,273.20 : 18,340,907.40 = 5,407,330.80 : x - Step 2: Convert to fraction form
12,220,273.20/18,340,907.40 = 5,407,330.80/x - Step 3: Cross multiply
12,220,273.20x = 18,340,907.40 × 5,407,330.80 - Step 4: Simplify right side
12,220,273.20x = 99,175,353,483,967.91 - Step 5: Solve for x
x = 99,175,353,483,967.91/12,220,273.20 - Step 6: Final answer
x = 8,115,641.27
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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.