Finding the Fourth Proportional to 1,129,728.94, 1,559,024.01 and 620,431.31
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Solution
The fourth proportional to 1,129,728.94, 1,559,024.01 and 620,431.31 is: 856,194.15
Step by Step Solution
- Step 1: Write the proportion equation
1,129,728.94 : 1,559,024.01 = 620,431.31 : x - Step 2: Convert to fraction form
1,129,728.94/1,559,024.01 = 620,431.31/x - Step 3: Cross multiply
1,129,728.94x = 1,559,024.01 × 620,431.31 - Step 4: Simplify right side
1,129,728.94x = 967,267,312,743.31 - Step 5: Solve for x
x = 967,267,312,743.31/1,129,728.94 - Step 6: Final answer
x = 856,194.15
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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.