Finding the Fourth Proportional to 554,643.63, 765,342.36 and 312,912.09
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Solution
The fourth proportional to 554,643.63, 765,342.36 and 312,912.09 is: 431,781.53
Step by Step Solution
- Step 1: Write the proportion equation
554,643.63 : 765,342.36 = 312,912.09 : x - Step 2: Convert to fraction form
554,643.63/765,342.36 = 312,912.09/x - Step 3: Cross multiply
554,643.63x = 765,342.36 × 312,912.09 - Step 4: Simplify right side
554,643.63x = 239,484,877,433.13 - Step 5: Solve for x
x = 239,484,877,433.13/554,643.63 - Step 6: Final answer
x = 431,781.53
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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.