Finding the Fourth Proportional to 813,186.09, 1,122,166.48 and 469,036.13
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Solution
The fourth proportional to 813,186.09, 1,122,166.48 and 469,036.13 is: 647,252.37
Step by Step Solution
- Step 1: Write the proportion equation
813,186.09 : 1,122,166.48 = 469,036.13 : x - Step 2: Convert to fraction form
813,186.09/1,122,166.48 = 469,036.13/x - Step 3: Cross multiply
813,186.09x = 1,122,166.48 × 469,036.13 - Step 4: Simplify right side
813,186.09x = 526,336,622,994.92 - Step 5: Solve for x
x = 526,336,622,994.92/813,186.09 - Step 6: Final answer
x = 647,252.37
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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.