Finding the Fourth Proportional to 643,817.97, 888,511.25 and 371,897.31
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Solution
The fourth proportional to 643,817.97, 888,511.25 and 371,897.31 is: 513,242.81
Step by Step Solution
- Step 1: Write the proportion equation
643,817.97 : 888,511.25 = 371,897.31 : x - Step 2: Convert to fraction form
643,817.97/888,511.25 = 371,897.31/x - Step 3: Cross multiply
643,817.97x = 888,511.25 × 371,897.31 - Step 4: Simplify right side
643,817.97x = 330,434,941,920.25 - Step 5: Solve for x
x = 330,434,941,920.25/643,817.97 - Step 6: Final answer
x = 513,242.81
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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.