Finding the Fourth Proportional to 738,683.80, 1,107,701.70 and 339,191.80
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Solution
The fourth proportional to 738,683.80, 1,107,701.70 and 339,191.80 is: 508,638.92
Step by Step Solution
- Step 1: Write the proportion equation
738,683.80 : 1,107,701.70 = 339,191.80 : x - Step 2: Convert to fraction form
738,683.80/1,107,701.70 = 339,191.80/x - Step 3: Cross multiply
738,683.80x = 1,107,701.70 × 339,191.80 - Step 4: Simplify right side
738,683.80x = 375,723,333,486.06 - Step 5: Solve for x
x = 375,723,333,486.06/738,683.80 - Step 6: Final answer
x = 508,638.92
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.