Finding the Fourth Proportional to 713,139.92, 984,140.79 and 390,843.08
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Solution
The fourth proportional to 713,139.92, 984,140.79 and 390,843.08 is: 539,367.67
Step by Step Solution
- Step 1: Write the proportion equation
713,139.92 : 984,140.79 = 390,843.08 : x - Step 2: Convert to fraction form
713,139.92/984,140.79 = 390,843.08/x - Step 3: Cross multiply
713,139.92x = 984,140.79 × 390,843.08 - Step 4: Simplify right side
713,139.92x = 384,644,617,517.23 - Step 5: Solve for x
x = 384,644,617,517.23/713,139.92 - Step 6: Final answer
x = 539,367.67
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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.