Finding the Fourth Proportional to 813,648.87, 1,122,901.74 and 451,186.38
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Solution
The fourth proportional to 813,648.87, 1,122,901.74 and 451,186.38 is: 622,673.97
Step by Step Solution
- Step 1: Write the proportion equation
813,648.87 : 1,122,901.74 = 451,186.38 : x - Step 2: Convert to fraction form
813,648.87/1,122,901.74 = 451,186.38/x - Step 3: Cross multiply
813,648.87x = 1,122,901.74 × 451,186.38 - Step 4: Simplify right side
813,648.87x = 506,637,971,166.30 - Step 5: Solve for x
x = 506,637,971,166.30/813,648.87 - Step 6: Final answer
x = 622,673.97
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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.