Finding the Fourth Proportional to 664,417.86, 916,577.74 and 434,874.09
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Solution
The fourth proportional to 664,417.86, 916,577.74 and 434,874.09 is: 599,917.51
Step by Step Solution
- Step 1: Write the proportion equation
664,417.86 : 916,577.74 = 434,874.09 : x - Step 2: Convert to fraction form
664,417.86/916,577.74 = 434,874.09/x - Step 3: Cross multiply
664,417.86x = 916,577.74 × 434,874.09 - Step 4: Simplify right side
664,417.86x = 398,595,910,596.76 - Step 5: Solve for x
x = 398,595,910,596.76/664,417.86 - Step 6: Final answer
x = 599,917.51
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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.