Finding the Fourth Proportional to 643,671.63, 888,239.93 and 357,174.63
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Solution
The fourth proportional to 643,671.63, 888,239.93 and 357,174.63 is: 492,886.05
Step by Step Solution
- Step 1: Write the proportion equation
643,671.63 : 888,239.93 = 357,174.63 : x - Step 2: Convert to fraction form
643,671.63/888,239.93 = 357,174.63/x - Step 3: Cross multiply
643,671.63x = 888,239.93 × 357,174.63 - Step 4: Simplify right side
643,671.63x = 317,256,766,563.10 - Step 5: Solve for x
x = 317,256,766,563.10/643,671.63 - Step 6: Final answer
x = 492,886.05
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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.