Finding the Fourth Proportional to 819,611.19, 1,131,144.08 and 497,295.99
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Solution
The fourth proportional to 819,611.19, 1,131,144.08 and 497,295.99 is: 686,317.39
Step by Step Solution
- Step 1: Write the proportion equation
819,611.19 : 1,131,144.08 = 497,295.99 : x - Step 2: Convert to fraction form
819,611.19/1,131,144.08 = 497,295.99/x - Step 3: Cross multiply
819,611.19x = 1,131,144.08 × 497,295.99 - Step 4: Simplify right side
819,611.19x = 562,513,412,609.76 - Step 5: Solve for x
x = 562,513,412,609.76/819,611.19 - Step 6: Final answer
x = 686,317.39
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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.