Finding the Fourth Proportional to 752,438.34, 1,038,377.61 and 412,938.18
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Solution
The fourth proportional to 752,438.34, 1,038,377.61 and 412,938.18 is: 569,861.66
Step by Step Solution
- Step 1: Write the proportion equation
752,438.34 : 1,038,377.61 = 412,938.18 : x - Step 2: Convert to fraction form
752,438.34/1,038,377.61 = 412,938.18/x - Step 3: Cross multiply
752,438.34x = 1,038,377.61 × 412,938.18 - Step 4: Simplify right side
752,438.34x = 428,785,760,426.15 - Step 5: Solve for x
x = 428,785,760,426.15/752,438.34 - Step 6: Final answer
x = 569,861.66
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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.