Finding the Fourth Proportional to 664,418.86, 916,579.12 and 434,875.09
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Solution
The fourth proportional to 664,418.86, 916,579.12 and 434,875.09 is: 599,918.89
Step by Step Solution
- Step 1: Write the proportion equation
664,418.86 : 916,579.12 = 434,875.09 : x - Step 2: Convert to fraction form
664,418.86/916,579.12 = 434,875.09/x - Step 3: Cross multiply
664,418.86x = 916,579.12 × 434,875.09 - Step 4: Simplify right side
664,418.86x = 398,597,427,302.12 - Step 5: Solve for x
x = 398,597,427,302.12/664,418.86 - Step 6: Final answer
x = 599,918.89
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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.