Finding the Fourth Proportional to 687,648.06, 948,939.39 and 381,706.74
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Solution
The fourth proportional to 687,648.06, 948,939.39 and 381,706.74 is: 526,747.01
Step by Step Solution
- Step 1: Write the proportion equation
687,648.06 : 948,939.39 = 381,706.74 : x - Step 2: Convert to fraction form
687,648.06/948,939.39 = 381,706.74/x - Step 3: Cross multiply
687,648.06x = 948,939.39 × 381,706.74 - Step 4: Simplify right side
687,648.06x = 362,216,561,014.49 - Step 5: Solve for x
x = 362,216,561,014.49/687,648.06 - Step 6: Final answer
x = 526,747.01
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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.