Finding the Fourth Proportional to 10,079,421.60, 15,115,201.20 and 4,395,770.40
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Solution
The fourth proportional to 10,079,421.60, 15,115,201.20 and 4,395,770.40 is: 6,591,941.15
Step by Step Solution
- Step 1: Write the proportion equation
10,079,421.60 : 15,115,201.20 = 4,395,770.40 : x - Step 2: Convert to fraction form
10,079,421.60/15,115,201.20 = 4,395,770.40/x - Step 3: Cross multiply
10,079,421.60x = 15,115,201.20 × 4,395,770.40 - Step 4: Simplify right side
10,079,421.60x = 66,442,954,025,004.48 - Step 5: Solve for x
x = 66,442,954,025,004.48/10,079,421.60 - Step 6: Final answer
x = 6,591,941.15
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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.