Finding the Fourth Proportional to 688,420.38, 949,960.68 and 382,491.18
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Solution
The fourth proportional to 688,420.38, 949,960.68 and 382,491.18 is: 527,804.80
Step by Step Solution
- Step 1: Write the proportion equation
688,420.38 : 949,960.68 = 382,491.18 : x - Step 2: Convert to fraction form
688,420.38/949,960.68 = 382,491.18/x - Step 3: Cross multiply
688,420.38x = 949,960.68 × 382,491.18 - Step 4: Simplify right side
688,420.38x = 363,351,581,446.80 - Step 5: Solve for x
x = 363,351,581,446.80/688,420.38 - Step 6: Final answer
x = 527,804.80
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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.