Finding the Third Proportional to 643,448.81 and 1,398,966.19
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Solution
The third proportional to 643,448.81 and 1,398,966.19 is: 3,041,588.32
Step by Step Solution
- Step 1: Write the proportion equation
643,448.81 : 1,398,966.19 = 1,398,966.19 : x - Step 2: Convert to fraction form
643,448.81/1,398,966.19 = 1,398,966.19/x - Step 3: Cross multiply
643,448.81x = 1,398,966.19 × 1,398,966.19 - Step 4: Simplify right side
643,448.81x = 1,957,106,393,768.29 - Step 5: Solve for x
x = 1,957,106,393,768.29/643,448.81 - Step 6: Final answer
x = 3,041,588.32
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Why These Related Problems?
These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.