Finding the Fourth Proportional to 4,128,086.70, 6,192,130.05 and 3,120,317.10
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Solution
The fourth proportional to 4,128,086.70, 6,192,130.05 and 3,120,317.10 is: 4,680,475.65
Step by Step Solution
- Step 1: Write the proportion equation
4,128,086.70 : 6,192,130.05 = 3,120,317.10 : x - Step 2: Convert to fraction form
4,128,086.70/6,192,130.05 = 3,120,317.10/x - Step 3: Cross multiply
4,128,086.70x = 6,192,130.05 × 3,120,317.10 - Step 4: Simplify right side
4,128,086.70x = 19,321,409,280,438.86 - Step 5: Solve for x
x = 19,321,409,280,438.86/4,128,086.70 - Step 6: Final answer
x = 4,680,475.65
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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.