Finding the Fourth Proportional to 813,235.31, 1,122,213.98 and 450,638.00
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Solution
The fourth proportional to 813,235.31, 1,122,213.98 and 450,638.00 is: 621,852.31
Step by Step Solution
- Step 1: Write the proportion equation
813,235.31 : 1,122,213.98 = 450,638.00 : x - Step 2: Convert to fraction form
813,235.31/1,122,213.98 = 450,638.00/x - Step 3: Cross multiply
813,235.31x = 1,122,213.98 × 450,638.00 - Step 4: Simplify right side
813,235.31x = 505,712,255,654.98 - Step 5: Solve for x
x = 505,712,255,654.98/813,235.31 - Step 6: Final answer
x = 621,852.31
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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.