Finding the Fourth Proportional to 899,316.08, 1,241,041.20 and 491,408.96
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Solution
The fourth proportional to 899,316.08, 1,241,041.20 and 491,408.96 is: 678,136.17
Step by Step Solution
- Step 1: Write the proportion equation
899,316.08 : 1,241,041.20 = 491,408.96 : x - Step 2: Convert to fraction form
899,316.08/1,241,041.20 = 491,408.96/x - Step 3: Cross multiply
899,316.08x = 1,241,041.20 × 491,408.96 - Step 4: Simplify right side
899,316.08x = 609,858,765,409.15 - Step 5: Solve for x
x = 609,858,765,409.15/899,316.08 - Step 6: Final answer
x = 678,136.17
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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.