Finding the Fourth Proportional to 689,185.07, 1,033,102.68 and 385,727.42
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Solution
The fourth proportional to 689,185.07, 1,033,102.68 and 385,727.42 is: 578,213.38
Step by Step Solution
- Step 1: Write the proportion equation
689,185.07 : 1,033,102.68 = 385,727.42 : x - Step 2: Convert to fraction form
689,185.07/1,033,102.68 = 385,727.42/x - Step 3: Cross multiply
689,185.07x = 1,033,102.68 × 385,727.42 - Step 4: Simplify right side
689,185.07x = 398,496,031,351.49 - Step 5: Solve for x
x = 398,496,031,351.49/689,185.07 - Step 6: Final answer
x = 578,213.38
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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.