Finding the Fourth Proportional to 813,211.06, 1,122,237.84 and 450,640.96
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Solution
The fourth proportional to 813,211.06, 1,122,237.84 and 450,640.96 is: 621,888.17
Step by Step Solution
- Step 1: Write the proportion equation
813,211.06 : 1,122,237.84 = 450,640.96 : x - Step 2: Convert to fraction form
813,211.06/1,122,237.84 = 450,640.96/x - Step 3: Cross multiply
813,211.06x = 1,122,237.84 × 450,640.96 - Step 4: Simplify right side
813,211.06x = 505,726,337,565.93 - Step 5: Solve for x
x = 505,726,337,565.93/813,211.06 - Step 6: Final answer
x = 621,888.17
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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.