Finding the Fourth Proportional to 643,157.25, 887,534.67 and 356,703.99
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Solution
The fourth proportional to 643,157.25, 887,534.67 and 356,703.99 is: 492,239.12
Step by Step Solution
- Step 1: Write the proportion equation
643,157.25 : 887,534.67 = 356,703.99 : x - Step 2: Convert to fraction form
643,157.25/887,534.67 = 356,703.99/x - Step 3: Cross multiply
643,157.25x = 887,534.67 × 356,703.99 - Step 4: Simplify right side
643,157.25x = 316,587,158,052.33 - Step 5: Solve for x
x = 316,587,158,052.33/643,157.25 - Step 6: Final answer
x = 492,239.12
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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.