Finding the Fourth Proportional to 751,423.10, 1,036,976.47 and 407,270.09
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Solution
The fourth proportional to 751,423.10, 1,036,976.47 and 407,270.09 is: 562,039.55
Step by Step Solution
- Step 1: Write the proportion equation
751,423.10 : 1,036,976.47 = 407,270.09 : x - Step 2: Convert to fraction form
751,423.10/1,036,976.47 = 407,270.09/x - Step 3: Cross multiply
751,423.10x = 1,036,976.47 × 407,270.09 - Step 4: Simplify right side
751,423.10x = 422,329,501,266.30 - Step 5: Solve for x
x = 422,329,501,266.30/751,423.10 - Step 6: Final answer
x = 562,039.55
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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.