Finding the Fourth Proportional to 858,812.09, 1,288,574.73 and 432,120.08
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Solution
The fourth proportional to 858,812.09, 1,288,574.73 and 432,120.08 is: 648,359.55
Step by Step Solution
- Step 1: Write the proportion equation
858,812.09 : 1,288,574.73 = 432,120.08 : x - Step 2: Convert to fraction form
858,812.09/1,288,574.73 = 432,120.08/x - Step 3: Cross multiply
858,812.09x = 1,288,574.73 × 432,120.08 - Step 4: Simplify right side
858,812.09x = 556,819,018,635.02 - Step 5: Solve for x
x = 556,819,018,635.02/858,812.09 - Step 6: Final answer
x = 648,359.55
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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.