Finding the Fourth Proportional to 643,563.40, 888,121.38 and 357,089.08
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Solution
The fourth proportional to 643,563.40, 888,121.38 and 357,089.08 is: 492,785.09
Step by Step Solution
- Step 1: Write the proportion equation
643,563.40 : 888,121.38 = 357,089.08 : x - Step 2: Convert to fraction form
643,563.40/888,121.38 = 357,089.08/x - Step 3: Cross multiply
643,563.40x = 888,121.38 × 357,089.08 - Step 4: Simplify right side
643,563.40x = 317,138,446,512.53 - Step 5: Solve for x
x = 317,138,446,512.53/643,563.40 - Step 6: Final answer
x = 492,785.09
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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.