Finding the Fourth Proportional to 874,831.79, 1,312,247.70 and 209,983.79
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Solution
The fourth proportional to 874,831.79, 1,312,247.70 and 209,983.79 is: 314,975.69
Step by Step Solution
- Step 1: Write the proportion equation
874,831.79 : 1,312,247.70 = 209,983.79 : x - Step 2: Convert to fraction form
874,831.79/1,312,247.70 = 209,983.79/x - Step 3: Cross multiply
874,831.79x = 1,312,247.70 × 209,983.79 - Step 4: Simplify right side
874,831.79x = 275,550,748,745.40 - Step 5: Solve for x
x = 275,550,748,745.40/874,831.79 - Step 6: Final answer
x = 314,975.69
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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.