Finding the Fourth Proportional to 685,424.36, 945,990.08 and 427,343.17
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Solution
The fourth proportional to 685,424.36, 945,990.08 and 427,343.17 is: 589,798.70
Step by Step Solution
- Step 1: Write the proportion equation
685,424.36 : 945,990.08 = 427,343.17 : x - Step 2: Convert to fraction form
685,424.36/945,990.08 = 427,343.17/x - Step 3: Cross multiply
685,424.36x = 945,990.08 × 427,343.17 - Step 4: Simplify right side
685,424.36x = 404,262,399,575.75 - Step 5: Solve for x
x = 404,262,399,575.75/685,424.36 - Step 6: Final answer
x = 589,798.70
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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.