Finding the Fourth Proportional to 861,349.20, 1,188,661.91 and 479,466.19
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Solution
The fourth proportional to 861,349.20, 1,188,661.91 and 479,466.19 is: 661,663.35
Step by Step Solution
- Step 1: Write the proportion equation
861,349.20 : 1,188,661.91 = 479,466.19 : x - Step 2: Convert to fraction form
861,349.20/1,188,661.91 = 479,466.19/x - Step 3: Cross multiply
861,349.20x = 1,188,661.91 × 479,466.19 - Step 4: Simplify right side
861,349.20x = 569,923,194,788.49 - Step 5: Solve for x
x = 569,923,194,788.49/861,349.20 - Step 6: Final answer
x = 661,663.35
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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.