Finding the Fourth Proportional to 812,532.04, 1,121,280.36 and 449,948.09
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Solution
The fourth proportional to 812,532.04, 1,121,280.36 and 449,948.09 is: 620,920.69
Step by Step Solution
- Step 1: Write the proportion equation
812,532.04 : 1,121,280.36 = 449,948.09 : x - Step 2: Convert to fraction form
812,532.04/1,121,280.36 = 449,948.09/x - Step 3: Cross multiply
812,532.04x = 1,121,280.36 × 449,948.09 - Step 4: Simplify right side
812,532.04x = 504,517,956,336.51 - Step 5: Solve for x
x = 504,517,956,336.51/812,532.04 - Step 6: Final answer
x = 620,920.69
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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.