Finding the Fourth Proportional to 519,784.36, 718,004.49 and 391,691.09
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Solution
The fourth proportional to 519,784.36, 718,004.49 and 391,691.09 is: 541,062.76
Step by Step Solution
- Step 1: Write the proportion equation
519,784.36 : 718,004.49 = 391,691.09 : x - Step 2: Convert to fraction form
519,784.36/718,004.49 = 391,691.09/x - Step 3: Cross multiply
519,784.36x = 718,004.49 × 391,691.09 - Step 4: Simplify right side
519,784.36x = 281,235,961,312.99 - Step 5: Solve for x
x = 281,235,961,312.99/519,784.36 - Step 6: Final answer
x = 541,062.76
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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.