Finding the Fourth Proportional to 457,770.68, 686,515.76 and 316,523.63
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Solution
The fourth proportional to 457,770.68, 686,515.76 and 316,523.63 is: 474,688.45
Step by Step Solution
- Step 1: Write the proportion equation
457,770.68 : 686,515.76 = 316,523.63 : x - Step 2: Convert to fraction form
457,770.68/686,515.76 = 316,523.63/x - Step 3: Cross multiply
457,770.68x = 686,515.76 × 316,523.63 - Step 4: Simplify right side
457,770.68x = 217,298,457,766.14 - Step 5: Solve for x
x = 217,298,457,766.14/457,770.68 - Step 6: Final answer
x = 474,688.45
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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.