Finding the Fourth Proportional to 687,479.80, 948,707.84 and 381,538.41
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Solution
The fourth proportional to 687,479.80, 948,707.84 and 381,538.41 is: 526,515.08
Step by Step Solution
- Step 1: Write the proportion equation
687,479.80 : 948,707.84 = 381,538.41 : x - Step 2: Convert to fraction form
687,479.80/948,707.84 = 381,538.41/x - Step 3: Cross multiply
687,479.80x = 948,707.84 × 381,538.41 - Step 4: Simplify right side
687,479.80x = 361,968,480,828.13 - Step 5: Solve for x
x = 361,968,480,828.13/687,479.80 - Step 6: Final answer
x = 526,515.08
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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.