Finding the Fourth Proportional to 907,697.12, 1,252,611.36 and 499,790.40
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Solution
The fourth proportional to 907,697.12, 1,252,611.36 and 499,790.40 is: 689,704.88
Step by Step Solution
- Step 1: Write the proportion equation
907,697.12 : 1,252,611.36 = 499,790.40 : x - Step 2: Convert to fraction form
907,697.12/1,252,611.36 = 499,790.40/x - Step 3: Cross multiply
907,697.12x = 1,252,611.36 × 499,790.40 - Step 4: Simplify right side
907,697.12x = 626,043,132,658.94 - Step 5: Solve for x
x = 626,043,132,658.94/907,697.12 - Step 6: Final answer
x = 689,704.88
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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.