Finding the Fourth Proportional to 643,607.01, 888,174.81 and 357,126.48
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Solution
The fourth proportional to 643,607.01, 888,174.81 and 357,126.48 is: 492,832.95
Step by Step Solution
- Step 1: Write the proportion equation
643,607.01 : 888,174.81 = 357,126.48 : x - Step 2: Convert to fraction form
643,607.01/888,174.81 = 357,126.48/x - Step 3: Cross multiply
643,607.01x = 888,174.81 × 357,126.48 - Step 4: Simplify right side
643,607.01x = 317,190,743,519.97 - Step 5: Solve for x
x = 317,190,743,519.97/643,607.01 - Step 6: Final answer
x = 492,832.95
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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.