Finding the Fourth Proportional to 687,853.19, 949,239.23 and 381,930.14
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Solution
The fourth proportional to 687,853.19, 949,239.23 and 381,930.14 is: 527,064.60
Step by Step Solution
- Step 1: Write the proportion equation
687,853.19 : 949,239.23 = 381,930.14 : x - Step 2: Convert to fraction form
687,853.19/949,239.23 = 381,930.14/x - Step 3: Cross multiply
687,853.19x = 949,239.23 × 381,930.14 - Step 4: Simplify right side
687,853.19x = 362,543,065,351.55 - Step 5: Solve for x
x = 362,543,065,351.55/687,853.19 - Step 6: Final answer
x = 527,064.60
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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.