Finding the Fourth Proportional to 542,291.48, 748,191.12 and 312,817.88
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Solution
The fourth proportional to 542,291.48, 748,191.12 and 312,817.88 is: 431,589.96
Step by Step Solution
- Step 1: Write the proportion equation
542,291.48 : 748,191.12 = 312,817.88 : x - Step 2: Convert to fraction form
542,291.48/748,191.12 = 312,817.88/x - Step 3: Cross multiply
542,291.48x = 748,191.12 × 312,817.88 - Step 4: Simplify right side
542,291.48x = 234,047,559,993.23 - Step 5: Solve for x
x = 234,047,559,993.23/542,291.48 - Step 6: Final answer
x = 431,589.96
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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.