Finding the Fourth Proportional to 939,489.30, 1,296,831.42 and 557,515.98
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Solution
The fourth proportional to 939,489.30, 1,296,831.42 and 557,515.98 is: 769,571.55
Step by Step Solution
- Step 1: Write the proportion equation
939,489.30 : 1,296,831.42 = 557,515.98 : x - Step 2: Convert to fraction form
939,489.30/1,296,831.42 = 557,515.98/x - Step 3: Cross multiply
939,489.30x = 1,296,831.42 × 557,515.98 - Step 4: Simplify right side
939,489.30x = 723,004,240,016.09 - Step 5: Solve for x
x = 723,004,240,016.09/939,489.30 - Step 6: Final answer
x = 769,571.55
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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.