Finding the Fourth Proportional to 687,632.85, 948,924.99 and 381,711.65
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Solution
The fourth proportional to 687,632.85, 948,924.99 and 381,711.65 is: 526,757.44
Step by Step Solution
- Step 1: Write the proportion equation
687,632.85 : 948,924.99 = 381,711.65 : x - Step 2: Convert to fraction form
687,632.85/948,924.99 = 381,711.65/x - Step 3: Cross multiply
687,632.85x = 948,924.99 × 381,711.65 - Step 4: Simplify right side
687,632.85x = 362,215,718,914.51 - Step 5: Solve for x
x = 362,215,718,914.51/687,632.85 - Step 6: Final answer
x = 526,757.44
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1.5x scale
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.