Finding the Fourth Proportional to 678,289.96, 936,051.82 and 372,394.68
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Solution
The fourth proportional to 678,289.96, 936,051.82 and 372,394.68 is: 513,911.07
Step by Step Solution
- Step 1: Write the proportion equation
678,289.96 : 936,051.82 = 372,394.68 : x - Step 2: Convert to fraction form
678,289.96/936,051.82 = 372,394.68/x - Step 3: Cross multiply
678,289.96x = 936,051.82 × 372,394.68 - Step 4: Simplify right side
678,289.96x = 348,580,717,972.32 - Step 5: Solve for x
x = 348,580,717,972.32/678,289.96 - Step 6: Final answer
x = 513,911.07
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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.