Finding the Fourth Proportional to 631,969.65, 872,128.49 and 377,343.09
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Solution
The fourth proportional to 631,969.65, 872,128.49 and 377,343.09 is: 520,739.65
Step by Step Solution
- Step 1: Write the proportion equation
631,969.65 : 872,128.49 = 377,343.09 : x - Step 2: Convert to fraction form
631,969.65/872,128.49 = 377,343.09/x - Step 3: Cross multiply
631,969.65x = 872,128.49 × 377,343.09 - Step 4: Simplify right side
631,969.65x = 329,091,657,406.92 - Step 5: Solve for x
x = 329,091,657,406.92/631,969.65 - Step 6: Final answer
x = 520,739.65
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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.