Finding the Fourth Proportional to 775,128.46, 1,069,765.86 and 430,998.70
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Solution
The fourth proportional to 775,128.46, 1,069,765.86 and 430,998.70 is: 594,827.46
Step by Step Solution
- Step 1: Write the proportion equation
775,128.46 : 1,069,765.86 = 430,998.70 : x - Step 2: Convert to fraction form
775,128.46/1,069,765.86 = 430,998.70/x - Step 3: Cross multiply
775,128.46x = 1,069,765.86 × 430,998.70 - Step 4: Simplify right side
775,128.46x = 461,067,694,964.38 - Step 5: Solve for x
x = 461,067,694,964.38/775,128.46 - Step 6: Final answer
x = 594,827.46
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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.