Finding the Fourth Proportional to 919,509.71, 1,268,811.96 and 511,515.14
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Solution
The fourth proportional to 919,509.71, 1,268,811.96 and 511,515.14 is: 705,828.90
Step by Step Solution
- Step 1: Write the proportion equation
919,509.71 : 1,268,811.96 = 511,515.14 : x - Step 2: Convert to fraction form
919,509.71/1,268,811.96 = 511,515.14/x - Step 3: Cross multiply
919,509.71x = 1,268,811.96 × 511,515.14 - Step 4: Simplify right side
919,509.71x = 649,016,527,353.07 - Step 5: Solve for x
x = 649,016,527,353.07/919,509.71 - Step 6: Final answer
x = 705,828.90
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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.