Finding the Fourth Proportional to 765,285.44, 1,056,103.62 and 421,160.99
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Solution
The fourth proportional to 765,285.44, 1,056,103.62 and 421,160.99 is: 581,207.51
Step by Step Solution
- Step 1: Write the proportion equation
765,285.44 : 1,056,103.62 = 421,160.99 : x - Step 2: Convert to fraction form
765,285.44/1,056,103.62 = 421,160.99/x - Step 3: Cross multiply
765,285.44x = 1,056,103.62 × 421,160.99 - Step 4: Simplify right side
765,285.44x = 444,789,639,281.91 - Step 5: Solve for x
x = 444,789,639,281.91/765,285.44 - Step 6: Final answer
x = 581,207.51
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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.