Finding the Fourth Proportional to 455,516.20, 683,274.30 and 431,021.80
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Solution
The fourth proportional to 455,516.20, 683,274.30 and 431,021.80 is: 646,532.70
Step by Step Solution
- Step 1: Write the proportion equation
455,516.20 : 683,274.30 = 431,021.80 : x - Step 2: Convert to fraction form
455,516.20/683,274.30 = 431,021.80/x - Step 3: Cross multiply
455,516.20x = 683,274.30 × 431,021.80 - Step 4: Simplify right side
455,516.20x = 294,506,118,679.74 - Step 5: Solve for x
x = 294,506,118,679.74/455,516.20 - Step 6: Final answer
x = 646,532.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.