Finding the Fourth Proportional to 918,768.32, 1,268,289.12 and 861,375.68
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Solution
The fourth proportional to 918,768.32, 1,268,289.12 and 861,375.68 is: 1,189,062.99
Step by Step Solution
- Step 1: Write the proportion equation
918,768.32 : 1,268,289.12 = 861,375.68 : x - Step 2: Convert to fraction form
918,768.32/1,268,289.12 = 861,375.68/x - Step 3: Cross multiply
918,768.32x = 1,268,289.12 × 861,375.68 - Step 4: Simplify right side
918,768.32x = 1,092,473,403,176.60 - Step 5: Solve for x
x = 1,092,473,403,176.60/918,768.32 - Step 6: Final answer
x = 1,189,062.99
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.