Finding the Fourth Proportional to 687,480.05, 948,708.19 and 381,538.66
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Solution
The fourth proportional to 687,480.05, 948,708.19 and 381,538.66 is: 526,515.43
Step by Step Solution
- Step 1: Write the proportion equation
687,480.05 : 948,708.19 = 381,538.66 : x - Step 2: Convert to fraction form
687,480.05/948,708.19 = 381,538.66/x - Step 3: Cross multiply
687,480.05x = 948,708.19 × 381,538.66 - Step 4: Simplify right side
687,480.05x = 361,968,851,543.63 - Step 5: Solve for x
x = 361,968,851,543.63/687,480.05 - Step 6: Final answer
x = 526,515.43
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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.