Finding the Fourth Proportional to 812,989.08, 1,122,081.84 and 469,047.12
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Solution
The fourth proportional to 812,989.08, 1,122,081.84 and 469,047.12 is: 647,375.55
Step by Step Solution
- Step 1: Write the proportion equation
812,989.08 : 1,122,081.84 = 469,047.12 : x - Step 2: Convert to fraction form
812,989.08/1,122,081.84 = 469,047.12/x - Step 3: Cross multiply
812,989.08x = 1,122,081.84 × 469,047.12 - Step 4: Simplify right side
812,989.08x = 526,309,255,456.30 - Step 5: Solve for x
x = 526,309,255,456.30/812,989.08 - Step 6: Final answer
x = 647,375.55
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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.