Finding the Fourth Proportional to 764,306.38, 1,055,821.99 and 612,353.62
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Solution
The fourth proportional to 764,306.38, 1,055,821.99 and 612,353.62 is: 845,912.63
Step by Step Solution
- Step 1: Write the proportion equation
764,306.38 : 1,055,821.99 = 612,353.62 : x - Step 2: Convert to fraction form
764,306.38/1,055,821.99 = 612,353.62/x - Step 3: Cross multiply
764,306.38x = 1,055,821.99 × 612,353.62 - Step 4: Simplify right side
764,306.38x = 646,536,412,372.99 - Step 5: Solve for x
x = 646,536,412,372.99/764,306.38 - Step 6: Final answer
x = 845,912.63
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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.