Finding the Fourth Proportional to 688,266.20, 949,641.18 and 401,622.68
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Solution
The fourth proportional to 688,266.20, 949,641.18 and 401,622.68 is: 554,142.33
Step by Step Solution
- Step 1: Write the proportion equation
688,266.20 : 949,641.18 = 401,622.68 : x - Step 2: Convert to fraction form
688,266.20/949,641.18 = 401,622.68/x - Step 3: Cross multiply
688,266.20x = 949,641.18 × 401,622.68 - Step 4: Simplify right side
688,266.20x = 381,397,435,749.96 - Step 5: Solve for x
x = 381,397,435,749.96/688,266.20 - Step 6: Final answer
x = 554,142.33
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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.