Finding the Fourth Proportional to 878,838.20, 1,212,785.81 and 516,295.11
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Solution
The fourth proportional to 878,838.20, 1,212,785.81 and 516,295.11 is: 712,480.85
Step by Step Solution
- Step 1: Write the proportion equation
878,838.20 : 1,212,785.81 = 516,295.11 : x - Step 2: Convert to fraction form
878,838.20/1,212,785.81 = 516,295.11/x - Step 3: Cross multiply
878,838.20x = 1,212,785.81 × 516,295.11 - Step 4: Simplify right side
878,838.20x = 626,155,389,987.13 - Step 5: Solve for x
x = 626,155,389,987.13/878,838.20 - Step 6: Final answer
x = 712,480.85
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.