Finding the Fourth Proportional to 643,903.44, 888,542.29 and 357,400.97
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Solution
The fourth proportional to 643,903.44, 888,542.29 and 357,400.97 is: 493,188.66
Step by Step Solution
- Step 1: Write the proportion equation
643,903.44 : 888,542.29 = 357,400.97 : x - Step 2: Convert to fraction form
643,903.44/888,542.29 = 357,400.97/x - Step 3: Cross multiply
643,903.44x = 888,542.29 × 357,400.97 - Step 4: Simplify right side
643,903.44x = 317,565,877,659.88 - Step 5: Solve for x
x = 317,565,877,659.88/643,903.44 - Step 6: Final answer
x = 493,188.66
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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.