Finding the Fourth Proportional to 1,392,582,669.20, 2,088,430,831.48 and 459,731,826.19
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Solution
The fourth proportional to 1,392,582,669.20, 2,088,430,831.48 and 459,731,826.19 is: 689,451,435.28
Step by Step Solution
- Step 1: Write the proportion equation
1,392,582,669.20 : 2,088,430,831.48 = 459,731,826.19 : x - Step 2: Convert to fraction form
1,392,582,669.20/2,088,430,831.48 = 459,731,826.19/x - Step 3: Cross multiply
1,392,582,669.20x = 2,088,430,831.48 × 459,731,826.19 - Step 4: Simplify right side
1,392,582,669.20x = 960,118,120,022,303,616 - Step 5: Solve for x
x = 960,118,120,022,303,616/1,392,582,669.20 - Step 6: Final answer
x = 689,451,435.28
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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.