Finding the Fourth Proportional to 509,657.60, 764,486.40 and 485,163.20
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Solution
The fourth proportional to 509,657.60, 764,486.40 and 485,163.20 is: 727,744.80
Step by Step Solution
- Step 1: Write the proportion equation
509,657.60 : 764,486.40 = 485,163.20 : x - Step 2: Convert to fraction form
509,657.60/764,486.40 = 485,163.20/x - Step 3: Cross multiply
509,657.60x = 764,486.40 × 485,163.20 - Step 4: Simplify right side
509,657.60x = 370,900,668,180.48 - Step 5: Solve for x
x = 370,900,668,180.48/509,657.60 - Step 6: Final answer
x = 727,744.80
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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.