Finding the Fourth Proportional to 1,421,132.08, 2,131,698.18 and 396,422.20
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Solution
The fourth proportional to 1,421,132.08, 2,131,698.18 and 396,422.20 is: 594,633.32
Step by Step Solution
- Step 1: Write the proportion equation
1,421,132.08 : 2,131,698.18 = 396,422.20 : x - Step 2: Convert to fraction form
1,421,132.08/2,131,698.18 = 396,422.20/x - Step 3: Cross multiply
1,421,132.08x = 2,131,698.18 × 396,422.20 - Step 4: Simplify right side
1,421,132.08x = 845,052,482,251.60 - Step 5: Solve for x
x = 845,052,482,251.60/1,421,132.08 - Step 6: Final answer
x = 594,633.32
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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.