Finding the Fourth Proportional to 1,434,387.83, 1,979,498.75 and 789,831.09
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Solution
The fourth proportional to 1,434,387.83, 1,979,498.75 and 789,831.09 is: 1,089,990.88
Step by Step Solution
- Step 1: Write the proportion equation
1,434,387.83 : 1,979,498.75 = 789,831.09 : x - Step 2: Convert to fraction form
1,434,387.83/1,979,498.75 = 789,831.09/x - Step 3: Cross multiply
1,434,387.83x = 1,979,498.75 × 789,831.09 - Step 4: Simplify right side
1,434,387.83x = 1,563,469,655,366.14 - Step 5: Solve for x
x = 1,563,469,655,366.14/1,434,387.83 - Step 6: Final answer
x = 1,089,990.88
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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.