Finding the Fourth Proportional to 686,106.60, 1,029,062.70 and 212,839.80
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Solution
The fourth proportional to 686,106.60, 1,029,062.70 and 212,839.80 is: 319,229.55
Step by Step Solution
- Step 1: Write the proportion equation
686,106.60 : 1,029,062.70 = 212,839.80 : x - Step 2: Convert to fraction form
686,106.60/1,029,062.70 = 212,839.80/x - Step 3: Cross multiply
686,106.60x = 1,029,062.70 × 212,839.80 - Step 4: Simplify right side
686,106.60x = 219,025,499,255.46 - Step 5: Solve for x
x = 219,025,499,255.46/686,106.60 - Step 6: Final answer
x = 319,229.55
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.