Finding the Fourth Proportional to 639,856.23, 959,959.69 and 279,961.84
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Solution
The fourth proportional to 639,856.23, 959,959.69 and 279,961.84 is: 420,019.48
Step by Step Solution
- Step 1: Write the proportion equation
639,856.23 : 959,959.69 = 279,961.84 : x - Step 2: Convert to fraction form
639,856.23/959,959.69 = 279,961.84/x - Step 3: Cross multiply
639,856.23x = 959,959.69 × 279,961.84 - Step 4: Simplify right side
639,856.23x = 268,752,085,519.25 - Step 5: Solve for x
x = 268,752,085,519.25/639,856.23 - Step 6: Final answer
x = 420,019.48
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.