Finding the Fourth Proportional to 719,405.28, 1,079,107.20 and 213,964.20
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Solution
The fourth proportional to 719,405.28, 1,079,107.20 and 213,964.20 is: 320,946.09
Step by Step Solution
- Step 1: Write the proportion equation
719,405.28 : 1,079,107.20 = 213,964.20 : x - Step 2: Convert to fraction form
719,405.28/1,079,107.20 = 213,964.20/x - Step 3: Cross multiply
719,405.28x = 1,079,107.20 × 213,964.20 - Step 4: Simplify right side
719,405.28x = 230,890,308,762.24 - Step 5: Solve for x
x = 230,890,308,762.24/719,405.28 - Step 6: Final answer
x = 320,946.09
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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.