Finding the Fourth Proportional to 639,409.60, 957,850.80 and 414,926.20
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Solution
The fourth proportional to 639,409.60, 957,850.80 and 414,926.20 is: 621,569.32
Step by Step Solution
- Step 1: Write the proportion equation
639,409.60 : 957,850.80 = 414,926.20 : x - Step 2: Convert to fraction form
639,409.60/957,850.80 = 414,926.20/x - Step 3: Cross multiply
639,409.60x = 957,850.80 × 414,926.20 - Step 4: Simplify right side
639,409.60x = 397,437,392,610.96 - Step 5: Solve for x
x = 397,437,392,610.96/639,409.60 - Step 6: Final answer
x = 621,569.32
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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.