Finding the Fourth Proportional to 915,903.96, 1,372,121.84 and 611,379.88
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Solution
The fourth proportional to 915,903.96, 1,372,121.84 and 611,379.88 is: 915,912.28
Step by Step Solution
- Step 1: Write the proportion equation
915,903.96 : 1,372,121.84 = 611,379.88 : x - Step 2: Convert to fraction form
915,903.96/1,372,121.84 = 611,379.88/x - Step 3: Cross multiply
915,903.96x = 1,372,121.84 × 611,379.88 - Step 4: Simplify right side
915,903.96x = 838,887,685,884.58 - Step 5: Solve for x
x = 838,887,685,884.58/915,903.96 - Step 6: Final answer
x = 915,912.28
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.