Finding the Fourth Proportional to 687,477.14, 948,704.18 and 381,535.75
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Solution
The fourth proportional to 687,477.14, 948,704.18 and 381,535.75 is: 526,511.42
Step by Step Solution
- Step 1: Write the proportion equation
687,477.14 : 948,704.18 = 381,535.75 : x - Step 2: Convert to fraction form
687,477.14/948,704.18 = 381,535.75/x - Step 3: Cross multiply
687,477.14x = 948,704.18 × 381,535.75 - Step 4: Simplify right side
687,477.14x = 361,964,562,268.78 - Step 5: Solve for x
x = 361,964,562,268.78/687,477.14 - Step 6: Final answer
x = 526,511.42
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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.