Finding the Fourth Proportional to 1,398,831.80, 2,098,247.57 and 387,953.75
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Solution
The fourth proportional to 1,398,831.80, 2,098,247.57 and 387,953.75 is: 581,930.60
Step by Step Solution
- Step 1: Write the proportion equation
1,398,831.80 : 2,098,247.57 = 387,953.75 : x - Step 2: Convert to fraction form
1,398,831.80/2,098,247.57 = 387,953.75/x - Step 3: Cross multiply
1,398,831.80x = 2,098,247.57 × 387,953.75 - Step 4: Simplify right side
1,398,831.80x = 814,023,020,152.80 - Step 5: Solve for x
x = 814,023,020,152.80/1,398,831.80 - Step 6: Final answer
x = 581,930.60
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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.