Finding the Fourth Proportional to 428,441.08, 591,113.58 and 247,128.70
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Solution
The fourth proportional to 428,441.08, 591,113.58 and 247,128.70 is: 340,959.67
Step by Step Solution
- Step 1: Write the proportion equation
428,441.08 : 591,113.58 = 247,128.70 : x - Step 2: Convert to fraction form
428,441.08/591,113.58 = 247,128.70/x - Step 3: Cross multiply
428,441.08x = 591,113.58 × 247,128.70 - Step 4: Simplify right side
428,441.08x = 146,081,130,577.75 - Step 5: Solve for x
x = 146,081,130,577.75/428,441.08 - Step 6: Final answer
x = 340,959.67
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.