Finding the Fourth Proportional to 1,279,724.96, 1,919,689.50 and 438,284
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Solution
The fourth proportional to 1,279,724.96, 1,919,689.50 and 438,284 is: 657,460.95
Step by Step Solution
- Step 1: Write the proportion equation
1,279,724.96 : 1,919,689.50 = 438,284 : x - Step 2: Convert to fraction form
1,279,724.96/1,919,689.50 = 438,284/x - Step 3: Cross multiply
1,279,724.96x = 1,919,689.50 × 438,284 - Step 4: Simplify right side
1,279,724.96x = 841,369,192,818 - Step 5: Solve for x
x = 841,369,192,818/1,279,724.96 - Step 6: Final answer
x = 657,460.95
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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.