Finding the Fourth Proportional to 620,394.86, 855,926.88 and 405,660.62
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Solution
The fourth proportional to 620,394.86, 855,926.88 and 405,660.62 is: 559,669.09
Step by Step Solution
- Step 1: Write the proportion equation
620,394.86 : 855,926.88 = 405,660.62 : x - Step 2: Convert to fraction form
620,394.86/855,926.88 = 405,660.62/x - Step 3: Cross multiply
620,394.86x = 855,926.88 × 405,660.62 - Step 4: Simplify right side
620,394.86x = 347,215,828,815.47 - Step 5: Solve for x
x = 347,215,828,815.47/620,394.86 - Step 6: Final answer
x = 559,669.09
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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.