Finding the Fourth Proportional to 878,907.20, 1,319,235.60 and 430,134.80
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Solution
The fourth proportional to 878,907.20, 1,319,235.60 and 430,134.80 is: 645,630.32
Step by Step Solution
- Step 1: Write the proportion equation
878,907.20 : 1,319,235.60 = 430,134.80 : x - Step 2: Convert to fraction form
878,907.20/1,319,235.60 = 430,134.80/x - Step 3: Cross multiply
878,907.20x = 1,319,235.60 × 430,134.80 - Step 4: Simplify right side
878,907.20x = 567,449,140,958.88 - Step 5: Solve for x
x = 567,449,140,958.88/878,907.20 - Step 6: Final answer
x = 645,630.32
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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.