Finding the Fourth Proportional to 687,026.30, 948,209.72 and 381,201.08
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Solution
The fourth proportional to 687,026.30, 948,209.72 and 381,201.08 is: 526,120.42
Step by Step Solution
- Step 1: Write the proportion equation
687,026.30 : 948,209.72 = 381,201.08 : x - Step 2: Convert to fraction form
687,026.30/948,209.72 = 381,201.08/x - Step 3: Cross multiply
687,026.30x = 948,209.72 × 381,201.08 - Step 4: Simplify right side
687,026.30x = 361,458,562,683.44 - Step 5: Solve for x
x = 361,458,562,683.44/687,026.30 - Step 6: Final answer
x = 526,120.42
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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.