Finding the Fourth Proportional to 643,272.24, 887,821.98 and 356,884.59
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Solution
The fourth proportional to 643,272.24, 887,821.98 and 356,884.59 is: 492,559.70
Step by Step Solution
- Step 1: Write the proportion equation
643,272.24 : 887,821.98 = 356,884.59 : x - Step 2: Convert to fraction form
643,272.24/887,821.98 = 356,884.59/x - Step 3: Cross multiply
643,272.24x = 887,821.98 × 356,884.59 - Step 4: Simplify right side
643,272.24x = 316,849,983,325.29 - Step 5: Solve for x
x = 316,849,983,325.29/643,272.24 - Step 6: Final answer
x = 492,559.70
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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.